Yeah, Ifound that I did not get enough PVA into thenarrowest part of the fillet. Thiscaused some distortion effects(called either "alligatoring" or "orange peeling")and broke the other fillet off inside the mold, too!

This is why when I re-do the P-39 mold I am adding a third part to the bottom. That should help with getting the fillets out in one piece, consistently.