I've always used a Coke can. I cut it a bit narrow so it can squeeze out if it's too thick. I also use Brad Bachelder - he has a guy who micro welds and then he fits it. Just depends if I feel cheap or want to spend the money [ ususally a $100 or so ]. I've never had any luck trying to glue / epoxy shims on - the stuff never sticks.
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Paul Harm
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