<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> List          =    I recently serviced a U1 vertical for a first time client. Excellent piano = very little wear and -tuned up quite well.          =    I did however find lettoff to be over !/4 “and inconsistent. =          =    I adjusted to 1/8” –and took up lost motion. Tightened action = screws. The key dip and after touch were sufficient, and the jacks are free to = travel away from the butts---no interference from that adjustable = rail—(sorry, I forget Y’s nomenclature on that component)          =    My client has a light touch and the action still stutters I returned, shortened blow distance readjusted lost = motion, and adjusted spoons to re-correct damper timing.          =    My client called again with the same problem and called other technicians = for advice also            =    I know bobbling hammers can be a problem on Yamaha verticals and = I’ve worked on hundreds of these, but I can’t shorten blow any more and = as I mentioned, keydip-aftertouch are correct. I’m hesitant to increase lettoff back to its original excessive amount, so esteemed colleagues = ---Any suggestions? I’m going back next week.          =    P.S.  Backchecks are also adjusted---I.E. catchers are not bouncing out or off = of the backchecks          =    Tom Driscoll RPT </div> </body> </html>