my clutch has been bleeding off on my 62. I replaced the slave cylinder, which helped alot, but it still bleeds off though not near as bad. I figure I need to rebuild the clutch side of the master cylinder. Heres the big question. Can I just replace the o-ring to get me by the holidays?? Or should I replace the master cyl. If it were the brakes I would replace the master but the brakes are fine.