Ok I have a question I have a Alfa mig-15 and a Kyosho Illusion. I am thinking of getting a Phase 3 f-16 but wanted to know if everyone is leaving the cheater holes open or closing them off. I am going to glass the bird with 1/2 oz fiberglass cloth and minipoly. So please let me know if ur flying with the holes open or closed and which is best. Thanks in advance......