Hey, I being new to nitro planes everything is just so foreign to me! I ordered an OS 65LA engine with a 12 x 6 prop. It finally came the other day and I was trying to put it all together but the hole on the prop is a lot smaller than the shaft coming out of the motor! What the heck? (tower hobbies recommended the prop with the motor) I ordered a spinner too and the spinner adapter kit as well. The instructions were no help at all either!