i have a few questions ive been searching around the internet for awhile now for answers but came up with nothing.

in this picture is it ok to put washers in between the wastegate and compressor housing. if so will i raise or lower boost levels its going on a 14b turbo so i think in the stock form it will be 9psi correct me if im wrong please.


and in this picture is it ok to grind down the little peg so i can rotate the compressor housing since the turbo outlet is being blocked by the exhaust manifold?


thanks for any help you guys could give