i hate shims they will nickle and dime your wallet to hell iv seen guys sand them to the right spec to save a few bucks and never heard any bad outta doing it,you just gotta sand them uniformly! would i do it? damn right lmao did it on many streetbike,dirtbike and quad engines double and triple checked the shims afterwards to see if all was well, AND ALL WAS. ill let you guys know how sanding the shims on a 7mgte goes as after i put the car back together,I'm pulling the motor for a donor motor, and for cleaning purposes in a few months