I have a AE b5m. I got a selection of springs in today. I tried all the combinations even the one I expected not to work. I have one set of springs that are balanced. Guess what the ones that came in the kit. I did move the top of the shock on the rear to the outside hole to get as balanced as I think I do. So It looks like I need to buy more springs in case these are to soft. Don't think they will be though. (What do I know, its been over 20 years.) One double followed by triple. sharpest 180 going into them and a banked 180 at the other, not as tight. Other than that the rest of them are fast flyers. Oil tomorrow, and testing Saturday.