<html> At 11:41 PM 04/30/2001 +0200, you wrote: <blockquote type=cite cite>Hi Terry... have never actually tried to measure directly friction on key pins myself. I always find that if you polish them (replace if rusted) well enough and coat them with proteck..then they are as good as you can get them...and that means I gotta deal with whatever that is. As far as bushings are concerned and sizeing the balance pin hole... well the same kinda thing applies. Too loose and the keys are wobbly... any tighter then just loose enough to avoid wobbly (grin) is too tight. Gotta love those Spurlock rebushing cauls in this regard... I also use teflon powder in the key bushings.</blockquote> My post the other day mentioned my method for cleaning/polishing key pins. I use a shoe lace (sneaker lace actually). I just tip the Protek bottle onto the lace which is covered by my thumb. You do not need to soak it, you'd have Protek running all over then. The  lace is looped around the pin and then drawn back and forth. Ease the bushings with a Key Bushing Iron, ease the balance rail hole with the Yamaha tool and them brush on dry Teflon into the bushings. I use a relatively stiff artist's brush trimmed short. Regards, Jon Page,   piano technician Harwich Port, Cape Cod, Mass. <a href="mailto:jonpage@mediaone.net" eudora="autourl">mailto:jonpage@mediaone.net</a> <a href="http://www.stanwoodpiano.com/" eudora="autourl">http://www.stanwoodpiano.com </a>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</html>