I have two screw drivers made to fit into a brace that have been ground down to fit into the tip of my tuning hammer. Using this arrangement I turn the screws until they stop at about 100 "/#s (a guess based upon tuning pin tightness). I skip alternate screws going around the parimeter in one direction and pick up the loose ones on the return trip. Screws inaccessable cannot be turned which is a shame because I would like to tighten them as well. I don't think torque standards can be set because wood types, hardness and ages and support systems vary too greatly. Examples Maple vs mahogony Soft maple and hard maple Maple 100 years old and maple 10 years old Dowel support of the plate vs wood blocks. Tightness is to integrate the plate and wooden structure into one cohessive unit. I hope this is helpful. Newton nhunt@rci.rutgers.edu
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