An XR650 is truly a handful on those boulders. AMHIK. A KDX220, not so much. Bah-RINGdingdingding...
Stan, sounds like a good opportunity to buy some pizza and have a club 'rebuild a 100 front diff' party. It's how I did my first R&P (for Squishy's truck) and I learned a lot.
And SAVED a lot too.
I have some tools (inch lb. torque wrench, press) you would need that you are welcome to borrow. Never done a 100 front diff but SOMEone has. Maybe even Squishy.
 wish I could have gone along, looks like fun. Ah, well, too busy building a tack shed, running underground plumbing and wiring...
Heb Dduw, heb ddim; Duw a digon
I'm that gun-totin', farm-raised, evangelical, pro-environment, OHV ridin'/drivin', Southern civil rights pro-labor Liberal yo' momma told you couldn't possibly exist.