Well latest update !! I phoned Piper Cams today and when I said i`ve only had cam in for around 6 months and done less than 100 miles , he told me "send cam and followers back we have been having some problems with un-satisfactory followers we will send you a new cam and new followers from our new supplier , and dont worry we have done extensive tests you shouldn`t have the same problems and we are sorry for the inconvenience" so i`m well happy was expecting to have to argue with them !!! Well new cam and followers take 2 !! lol