Dale writes, inre Hexagrip blocks: >> I find the same to be true. Jumpy popping pins. Variable torque. I think the problem stems from drilling & then stringing protocols which contributes to this. Perhaps Rons double drilling method would help solve this. Dale Erwin R.P.T. I have only drilled one block from the factory, and it was absolutely no different in results than Andre' Bolduc's blocks, it just cost a lot more. The feed speed/bit angle/rpm equation isn't rocket science, but a double drilling has more margin for success. Regards, Ed Foote RPT http://www.piano-tuners.org/edfoote/well_tempered_piano.html
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