Welding doesn't seem to help... I tried to fix it in the setup room but I don't know exactly what to do as the polygon belongs to one group only...I don't know what the problem is! After trying many times to regroup it sometimes look better,even if I don't understand why:I tried to crate a new group ,then eliminated its polygons from other groups then assign its polygon to one group only...it seems to work in some parts but not in others,especially under the sole...Any toughts?It is weird I think...