Hi Wim, I want to second the advice you've received - to recommend using Steinway factory (ie, C & A Dept) techs as the outside consultant if at all possible. Or at least making sure the consultant is someone with a track record working specifically on Steinway concert instruments, preferably "setting them up" (doing initial prep and voicing) as well as on-going maintenance. I can see a situation where a well-meaning, pretty weel-skilled tech comes in and decides he needs to saturate the hammers in lacquer once or twice, manages to get the piano sounding acceptable, and then, weeks later, you end up with hammers a needle can't penetrate. My take (obviously from a distance) is that probably all that's needed is some judicious filing/shaping, perhaps a mild application of acetone to crowns to draw solids to the surface and give added zing, perhaps judicious application (very focused/targeted and very shallow) of mild keytop to crowns where needed. At any rate, the bottom line is that a tech with lots of specific experience is more likely to get to the root of the perceived problem, and not cause you more problems down the road. Whoever does end up coming, I'd be sure to keep a close eye on exactly what is done, so you have a good idea what you will be dealing with, and so you can learn from the results. Wouldn't be a bad idea to document what is done (just write down a description in your daily log or whatever). Just another couple cents to stick in your back pocket. Regards, Fred Sturm University of New Mexico
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