<html> <body> Hi Jurgen,                   I will measure both let off buttons and Jack/spoon buttons next week and get some range samples for you. Please send 6 sets B/R punchings and 3 more sets of F/R punchings.  Darn those thingee's are good. Several of the pianos at U of S have been done. Seems like the other 15 grands will get done over the next 12 months. Regards Roger. At 09:42 PM 12/8/2005, you wrote: <blockquote type=cite class=cite cite="">Roger - Can you give a diameter and an ideal thickness for that button punching?  I'll see if I can get some made up from that special secret felt that no one is supposed to know about - you know which one I mean.....starts with "W" Jurgen Goering Piano Forte Supply (250) 754-2440 info@pianofortesupply.com <a href="http://www.pianofortesupply.com"> http://www.pianofortesupply.com</a> On Dec 8, 2005, at 2:51 AM, Roger Jolly wrote: <blockquote type=cite class=cite cite="">Hi Don,             The most likely cause will be the jack spoon button.  Many of the Korean pianos used a woven cloth instead of the more resilient felt,   The cloth gets hard and it makes a horrible noise when the button connects with the spoon. Another thing to check,  is the drop button leather.  Around this time a synthetic was used, and it hardens with age.  On release from check the balancier clatters against the drop screw. With the first problem, needling the cloth can reduce the problem. Bin thar, done dat, it's a BS fix at best.  Now I bite the bullet and change the felt buttons.   You will have to reposition the spoons, due to the fact the felt punchings are thicker than the cloth. With the drop screw leather, the only fix is replace them with quality material.  Carefully mark the hammer rail position with respect to the brackets.  Remove the hammer rail, and the tops of the wippens are exposed so you can work on them,  Remember to include a major regulation in your estimate. Regards Roger </blockquote> </blockquote></x-html></blockquote></body> </html>