You call 2200miles HIGH mileage?!!!!! One of our members Reogem has 21 000 miles on his 2013 grizzly 700. Heck I put 1800 miles on my old grizzly in the last 9 months.
Seriously, your bike is just broken in! The reality is you actually own a low mileage machine.
The only things I would add to your list is
-Verify brake bads, rotor, callipers etc.....
-Verify wheel bearings, tie rods, ball joints, upper and lower control arms, drive shafts, axles and boots etc.....
- At the very least service your primary sheave, even better the secondary.
I'm sure many others will add to this............