Sticky key solved! Find diameter of balance pin hole using drill shank = 1/8" Convert to metric (3.18mm) and use successive increments of 0.1 mm drill sizes (3.2, 3.3....) to increase hole size until keylever frees up. Result at 3.4 mm - still less than 9/64". Now to check out against my pipe drones and see where the wolf intervals are. Paws
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