Help!!!!! I have a wm Chipmunk-90s and I can't get the retracts to work right.Can anyone who has this kit tell me which retract servo there using.Mine collapsed on the maiden flt T.O. roll.A local hobby store told me I needed a retract servo with a 180 degree throw.The plans call for a 26mm throw.As far as I can tell there's no way this would work.I adjusted the down lock and made 6 flights with the gear down.The plane flys great.The problem I'm having is I don't have enough throw wheels up.If you have this plane can you tell me if you used a retract or regular servo.Any input would be great. Mike