Hi, the clutchs always sticks on shercos when there cold, so theres nothing wrong with your bike.You can stop this happenig if you buy Rock oil gold bottle (sorry cant remember the name)it does help. Im not sure how much the rubber seal for the clutch is but give malcolm a ring 01423 772205 or email rhoda@malcolmrathmellsport.com. i use ipone fuel mix find it runnes cleanand smells of strwaberries. lol