A buddy of mine with a 600 XC recently snapped off one of the six bolts that holds the cover on the primary clutch while changing weights. It was snapped off deep in the threads and he tried to use a easy out to get it out, with no luck. He then decided to drill out the broken bolt with a bit just a touch smaller than the bolt hole size with the intentions of using a helicoil to fix the problem. Question is if the helicoil works, is it necessary to re-balance the primary clutch?? Will the helicoil provide enough weight difference to even worry about it? If he needs to rebalance where in MN (preferrably Twin Cities area) would he have that done?? If anyone has any experience or a location it would be appreciated.