Hi Brian, I use an aluminum gauge 1/8" high that slips under a coil. If it is too high pound it down. If it is too low, oops. My pin punch is fairly long. I lay it across a group os pins and drive down those that cause it to rock. Simple trick for simple mind. There is a tool that Pianotek may have that is a pair of pliers, LONG nosed, that has been ground so that you can grasp a capstan, squeeze, turn, return, regrasp, etc. There is also a tool, long nosed pliers where the tip has been flattened, curved and hardened to grasp round letoff dowels and also dowel type capstans. I do not have either but have found it useful to drop a grand action on a set of keys and push down to see what happens. I check the middle and each end, remove the stack and rough turn capstans according to my observations of hammers way too high or keys way too low. Saves some knuckle skin, mine not it's. Newton
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