List, Had a funny thing happen yesterday on a 1971 Yamaha Grand that I have serviced for the last 21 years. Actually had to use Protek on one jack center pin bushings to free up a little sluggishness. Wouldn't repeat. What a monumental undertaking. :-)))) I service numerous Yamahas, and that was a first for me. Tickled my funny bone having to do that when some other makes I service require lots of Protek from time to time. Just wanted to share the incredibile reliability of this Yamaha piano. Keith McGavern kam544@flash.net Registered Piano Technician Oklahoma Chapter 731 Piano Technicians Guild USA
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