just change the drivers. its easy and cheap. call reggie at highmark rec in boise,ID and ask him if they have any take off driver for customer project sleds. (i bought 3 new drivers with the middle one being exvort style) then just take the cover plate off and 6 bolts under the clutch side and remove the chaincase chain and lower gear, after you take the rear suspension & track out first.
take to driveshaft & new drivers to a machine shop and have them press the old off and new ones on, then just reinstall the drivers and rear suspension back in.
I can probable take my whole thing apart in about 1 1/2 hours and the same to put back in other than machine shop time.
The drivers from reggie cost me $75 for the set of 3. thats cheap compard to buy aftermarket drivers.
hope this helps