I think there was a very descriptive thread on the shimming subject about a year ago here. Possibly it was saved as a reference or someone has it on their computer and can share it again?
It did and does bring out those that argue both sides of whether this is a viable fix or another way of "mousing" a problem. I am kind of in the middle on this one. It works, but I'd probably not be happy with this kind of fix on an otherwise very desireable gun. For a not so treasured field gun, I'd have no problem using it.
