List, I am rebuilding a Steinway model O, 1913. I've replaced the action with all Renner and I'm using the old back action (damper system) since it is in very good condition. I have prepped it, reinstalled it and I've gotten the usual too heavy touchweight due to the spring tension on the underlevers. I plan to put the system back on the workbench and use a small digital scale to weigh-off each underlever, setting the spring tension on each underlever. Does anyone have any guidelines/gram #'s on what I should shoot for to get good weight and good damping? I attended the Renner all-day class in K.C., but neither my notes nor memory recall specific instruction on this. In the past I have weakened them and guesstimated it. Thanks in advance. Lance Lafargue, RPT Mandeville, LA New Orleans Chapter
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