Gear box removal/onstall

I have a RV12 with a 912ULS that has 600+ hrs running on 100LL most of the time.  Time to remove the gearbox for servicing.  I am located about 50 mi north of Sacramento and would appreciate any contacts for Rotax maint in the Northern CA area.  I have reviewed the video on the gearbox and would be more comfortable with qualified help. 

Thanks, Jim Barrilleaux. jandgbario@gmail.com