I have an OS .40 FP on my high wing trainer and I swing a 10x6 prop with no real issues. I just built a low wing trainer (plastic over foam) and have an extra OS.40FP and a 10x6 prop. The planes are about the same weight and size but the OS papers state that an 11x6 prop is best.. Should I give the 11x6 a go versus the 10x6 or do you think that it works on the high wing so it should be good for a slow, low wing? Any suggestions would be helpful.