Front spacers with OME kit?

I have a 2013 DCSB 4x4 with OME lift kit (887s). My BFG K2Os rub slightly on the frame at full turn while backing up. Would a very minimal (1/4" or 1/2") spacer lift or wheel spacer help eliminate this?

 

Spacer lift not help, wheel spacers would work.

Good wheel alignment would be the best option. Max. caster would eliminate that.

 

Frame or the cab mount? Spacer lift won't change where it hits on full lock. Wheel spacers could make it worse, depending on what part of the tire is hitting at full lock, as its going to push the edge of the tire out further.