Hi Dan
I know my measurement is not a true backlash measurement as to do that would require stripping the BB to get at the gear teeth.
I measured mine by applying the hand brake to lock the rear wheel then used a DTI against the prop spider, then by gripping the prop shaft by hand just rocked it back and forth. Thats where the .011" came from.
This measurement was just to try and asertain what is within acceptable limits.
For all I know it could be middle limit, or miles out. Who knows?
I'll ring my dealer tomorrow.