I'd suggest sourcing a set under warranty and keeping them in a box � do Kev's cush-drive mod and when that's no longer performing pop the new ones in. I'll bet you still haven't fitted the new ones by 10,000.

My rubbers looked far worse than that, and the dealer agreed. I told him I was going to pack them out a la Kev mod until the new ones were here and they said OK, we'll order them anyway. That was 5,000 miles ago and there's still no play in the drive.

It seems that the original rubbers compress a bit in their early miles causing slack in the system and the pulses from the big thumper just pulverise them as there's movement in there � take up the slack with old innertube and the free movement is gone, then the cush-drive rubbers can go back to doing what they're supposed to.

I'm going to change mine this summer before a long trip, but as much as anything that's because I'm interested to see the state of the old ones.