Thanks again Gareth, yes, what I referred to as "pedal trim" is yaw trim, when flying full size helicopters the yaw is controlled by the pedals, must get my terminology right. Will have a look at the shafts, meanwhile the Medevac is providing some good stress relief when I get home from work, two batteries and two Bourbons and I calm down enough to go in the house. Some of the confusion regarding model names came from your earlier post (25/10.07) where you said you considered a Falcon 3d but bought a MiniPred after advice from your instructor. Are they the same model from different manufacturers? Regards, Barney.