Hi folks, I wonder if anyone (in the UK?) has come across action screws like these? I tuned for a new customer yesterday, an old straight-strung upright, circa 1920, pretty standard cheap quality English upright. I took the action out, and noticed that the flange screws had odd heads. I pride myself on having every kind of screwdriver - flat, Philips, Torx, Hex, Pozidrive, Security Torx etc. These screws, however, had heads with SQUARE holes. Looked like Hex heads at first, but square. A new one on me! Best regards, David. P.S. I got one out using just an ordinary flat screwdriver placed diagonally in the hole.
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