I have been doing them on AFP and they are not smooth yet but I have read and learned that you have to hold full left/right alerion what ever your most comfortable with and move that stick up and down going through center without stopping.At the same time your left stick has to be around half trottle and it is moving left to right going through center without stopping.Seems there a knack to it.You have to imput the necessary controls moments before they happen.I read a members input on this subject and he goes into detail on it but doesn't really talk one through trottle management.Maybe he will re-submit on this tread. One more note on rolling too fast is to use your dual rates for alerion.I will find the tread and post later.