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Old May 20th, 2019, 12:05 AM   #5
ursle
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Join Date: Jun 2009
Location: NH
Posts: 4,080
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Shimming is all and only about the pivot pin.
SA or DA if the hanger isn't parallel to the plate the pivot pin will not work or move properly in it's cup.
Adjustable pivot pins are great, unless the adjustment they offer isn't enough, for example I run cones top and bottom, the cones are shorter than barrels, so I use 1/2 and 1 mm plastic shims to get the hanger closer to parallel with the plate and the adjustable pivot pin can make an exact placement.
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