I managed to get the dealer to give me a new set under warranty at 8k. I had padded them out with push bike tubes but they were breaking up. 2k later Inc lots of off road and there was 8-10mm of play!!!!

I've done the mod properly this time using M/C tubes and it's rock solid. As long as your rubbers are just compressed and not breaking up I'd be inclined to mod them, new rubbers will soon wear and you're back at square 1