Garret, It sounds like the "various technicians" haven't located the exact source of the squeak. You need to isolate sections by working backwards. I usually start by climbing under the piano and work the trap levers by hand. This takes the lyre portion out of the loop, and I know which direction to head. Once you've determined the source, you'll be able to deal with the squeak. I'd like to add that often there may be a squeak in a pedal that the owner can produce, and you can't because their foot is pressing the pedal at a different angle, so try every angle you can! You also mentioned that some had tried inverting the felt......better to use a new piece then use the old, offending piece and expect improvement. Gordon Large Maine
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