I got my 20th anniversary back yesterday after the seal blew on the rear shock. The whole unit was replaced under warranty. It was noticed by one of my mates when we were in Assen for the GP. Bikes only got 4200 miles on it and it was 300 all in back from Assen after it was noticed. I was like riding a pogo stick all the way back. Keep an eye out and maybe worth your while getting it checked if it's about to run out of warranty as mines has only 2 months left and I'd hate to have to pay for a new shock.