Jon writes; << To me, aftertouch is an automatic by-product of a regulation. If something makes this so dramatically different between notes to require altering the dip from note to note, I would rather correct the problem with the poor geometry/leverage to produce consistency. >> Greetings, Yes, I would too, however, when there is nothing to be done but set the adjustments, some method of spreading the geometry tolerances must be made. I do a lot of jobs that are just regulations, not action rebuilds. In fact, simple regulation of grand actions pays better returns than anything else I do. I think the main difference in note to note geometry is to be found in the knuckle;hammer flange, relationships. The moment arm is so small there that it is very sensitive to geometry. I have been working on a system of measuring the actual ratios in a set of hammershanks. It is not quite perfected enough to let out of the box, but it does involve lasers and mirrors and I hope to try it out this fall. Regards, Ed Foote
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