thanks, ive only done one track day and plan only to do 2 or 3 more this year so sounds like winter will be a good time, I dont have the know how to do this, i understand how it works but cheaking limits etc etc i could never trust myself, Ill get Andy to do it, or if mark dent ever replys to emails ill have him do it as he is closer, My rfeind has a RG500 and a Harris frame RG500 tuned to the nuts and he reckons my MC has more mid range than his bikes!!!!! so maybe its okay for now, \ill have a go of his 2 bikes at cadwell on the 29th of July,....... Thanks again,