Had the same problem on my 06. I tried everything no luck. Finally I plugged the oil jet. Problem completely solved. I think too much oil stays in the clutch and the viscus drag is what causes the problem. I have put about 10k on the bike since and miked the clutch plates a few times and found no significant wear. I don't really abuse the clutch, perhaps if I did the added oil would be required but I don't see any problems yet and the clutch works a thousand times better.