Hi Bill, In point of fact I tried a back cover on my own personal upright for 2 years before I suggested it to a client. Does that meet your criteria? Or is humidity control *too new fangled* to start with. Lets see now...pitch swing on a Yamaha C3 today 41% humidity (tuned Feb 2, 2000. 28% humidity) A4 (a47 for the *older* technician) 12 cents (oops 3 hertz, nooooo oops 3 cycles per second) sharp. Worst note sharp (E3) 40 cents sharp. Nope humidity control is *far* too radical an idea. Just because people wish to find better and faster ways to do beneficial work does *not* mean they *don't* have ethics. At 01:06 AM 08/29/2000 EDT, you wrote: >The posts of some of you "professional piano technicians" are getting harder >and harder to take. Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. Tuner for the Saskatchewan Centre of the Arts drose@dlcwest.com http://donrose.htmlplanet.com/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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