Anyone know what a dealer charges for servicing the splines?
Nothing if you do it yourself. I had my rear-end off in 30 minutes or less. Super easy to pull off.
1. Get bike on center stand
2. Move rear jug muffler out of the way
3. Remove shifter side rear shock. I was able to leave my brake side shock on.
4. Dismount rear brake adjuster
5. Dismount rear brake brace
6. Pull axel cotter pin and un bolt rear axel
7. Unbolt the 4 nuts holding final drive to outer drive shaft housing
8. Tap axel through while using foot to take weight off axel
9. Once axel is cleared, simply pull the tire towards you.
10. You now have access to final drive splines and rear coupler
Getting to the front splines is a slight bit of work, but do able. Just slide the drive shaft back and the splines are exposed under the rubber boot behind front bezel.
I think it took me longer to re assemble than it did take apart.
Read the spline lube procedure under the Transmission/Final Drive section. It's stickied and near the top.