ha ha ha i had that prob i fixed it even easier then that.
Pushed up backbox, Slid in half an old rubber i had lying on the floor done.
Not a bang, rattle, bump, blow nothin took me all of erm 2 seconds wow that was hard and cost feck all lol.
Oh been like that for 10000m now and in that time ive had to do my gearbox mount 3 times grrrr,
Might just botch that too it seems to work well on the clitorus cup. lol