diff --git a/dxf/SPP_BaseBackBottom.dxf b/dxf/SPP_BaseBackBottom.dxf
index 76a67fc..3482ed6 100644
--- a/dxf/SPP_BaseBackBottom.dxf
+++ b/dxf/SPP_BaseBackBottom.dxf
@@ -267,7 +267,7 @@ AcDbCircle
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 32.93746682407923
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@@ -289,13 +289,13 @@ AcDbEntity
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 AcDbCircle
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@@ -337,13 +337,13 @@ AcDbEntity
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 AcDbCircle
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--23.124702362054677
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@@ -361,13 +361,13 @@ AcDbEntity
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 AcDbCircle
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@@ -551,7 +551,7 @@ AcDbPolyline
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@@ -559,6 +559,54 @@ AcDbEntity
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 AcDbLine
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@@ -575,7 +623,7 @@ AcDbLine
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 LINE
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 AcDbEntity
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@@ -597,7 +645,7 @@ AcDbLine
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 SPLINE
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 AcDbEntity
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@@ -641,17 +689,17 @@ AcDbSpline
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--0.50000000387338983
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--0.50000000387338983
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--0.50000000387338983
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--0.50000000387338983
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--0.50000000387338983
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--0.50000000387338983
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@@ -703,39 +751,39 @@ AcDbSpline
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--23.399999784922731
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--20.839999861688657
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--18.91999992045071
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--17.63999996560149
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--17
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 LINE
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 AcDbEntity
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@@ -743,21 +791,21 @@ AcDbEntity
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 AcDbLine
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--17
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--17.000000000031999
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 SPLINE
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 AcDbEntity
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@@ -781,17 +829,17 @@ AcDbSpline
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 0.59999999999999998
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@@ -833,33 +881,33 @@ AcDbSpline
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 1
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--17.000000000031999
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@@ -895,7 +943,7 @@ AcDbSpline
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 LINE
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 AcDbEntity
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@@ -917,7 +965,7 @@ AcDbLine
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 LINE
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 AcDbEntity
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@@ -939,7 +987,7 @@ AcDbLine
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 LINE
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 AcDbEntity
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@@ -953,15 +1001,15 @@ AcDbLine
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--33.524999999999991
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 ARC
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 AcDbEntity
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 AcDbCircle
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--33.524999999999999
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@@ -985,13 +1033,13 @@ AcDbCircle
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 AcDbArc
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 LINE
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 AcDbEntity
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@@ -999,21 +1047,21 @@ AcDbEntity
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 AcDbLine
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--33.400000000000006
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--33.399999999999999
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 ARC
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 AcDbEntity
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@@ -1023,15 +1071,15 @@ AcDbCircle
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--33.524999999999999
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@@ -1039,11 +1087,11 @@ AcDbArc
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 0
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 LINE
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 AcDbEntity
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@@ -1051,9 +1099,9 @@ AcDbEntity
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 AcDbLine
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--33.524999999999991
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