Hi Guys, I'm looking to service kits for my Barient winches on my Hunter 30T. I have a model 21-33 two speed and model 17 single speed for my halyards. Anyone has a general guidlines when you should change the winch bearings complared to just greasing them. The bearings look ok. However, I'm having problems with the insert (center) ring on the self tailing portion. This insert has a "key" section on it that needs to stay under the self tailing guide. The key moves around under the jig sheet when I crank down on it. Thanks