+1 coke can always starts to move after a while for me.
Get some 200 grit paper on both surfaces, that way they 'mate' for a good grip., or even use a piece of the paper for a shim.
@chris_gee started
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Get some 200 grit paper on both surfaces, that way they 'mate' for a good grip., or even use a piece of the paper for a shim.