Adjusting rear camber??

[PHXDEMON]

A couple days ago I installed the 13mm penguin rear hub spacers. Needless to say my prolems with the rear tires rubbing the inner fender on bumps got worse and it is hitting metal which scares me I have gone to the extent of sticking rubber pieces in the springs (DF210s) to stifffen them up, removing the plastic linging from the inner fender, rolling my fenders, and filing some metal from the inside of the wheel well. My options at this point are to either.

A. Get skinnier tires (expensive)

B. See if I can get someone to trade me 10mm spacers for my 13mm's

C. Adjust the rear camber so it clears (hopefully an inexpensive mod)

Anyway I was wondering if there is an easy and relatively cheap way to adjust the rear camber without coilovers.