Put it in to shop haha. I put mine in to Inverness shop to remove a broken plastic plug going in to motor. Said tweek my gears as well . Lasted about a month with perfect changing now slower . Works on most gears but I always get one that is delayed in shifting to a lower gear , I just live with it.HI Binhill Kudos for the reply. It was for the purpose of cleaning the drivetrain and cassette and clean bike generally. I also wanted to fix the shifting issue as my derailer isnt working properly and I can only select 6 out of 12 gears. The chain also jumps and makes a horrible clunking sound so its not at all smooth shifting.As said I couldnt do that as the pedals were to low and kept getting stuck through half turn on the stand.