Thanks for your fast reply. I am wondering the rials should be planar. I got them by intersecting planes with the polysurface. They should be in the same plane space.

Also all my fillets disappeared....It is the second time...I can not do them again...I went to Rhino and they were there but duplicated...
Is it possible that MOI Demo has some bugs? It is strange..I did the fillets in 3 hs...twice and now , bum gone in MOI.

I will see what happens once I finish it in Rhino and bring them back

Thanks so much