hi kev and thx for the reply,,you will have to excuse my ignorance but this is my first proper heli build,,and im sure it will all become apparent once i attack the tail build but what i was trying to get accross is that as my tail has come built the tail output shaft is sticking out 5 mil past the bearing on the left side ,,is this right as this does give a slight offset in the grips with the controll arm at 90,,on my trex 600 the build said to leave the grips at zero ,,hopefully i will be attacking the tail over the weekend,,,just finished building the mainframes up and must say its all gone togeather very nicely