Seams - painted or back/front still occur in other places

[VinceHogg]

The seam function still allows random seam positions in some layers. See the gaps in the grey line at the trailing edge. For wing surface printing its best to have the seam at the narrow trailing edge. When I paint a seam at this position (or use front/back seam) there are still occasional random seams elsewhere on the wing surface causing spots. I have been using simplify 3D previously and this dosent do this on the same parts.