Bill, several manufacturers actually supply us with the necessary felt...the key cover cloth!! I carry an extra one just for this purpose. Speaking of let off, here's a trick to set rough let off by comparing how hard it is to press the jack through let off. Press the jack tender into the let-off button while rolling your finger to the midway point along the jack tender to lift the wippen and block the hammer against the string. Continue to roll your finger forward along the jack tender until you push it through let-off. By adjusting the let-off button, you can change how much of a "bump" you feel as let-off occurs. With a little practice, you can rough in let-off to about .5mm tolerance. If let-off is too wide, the jack trips before any "bump" is felt. If let-off's too close, the "bump" is quite pronounced or it's even impossible to press the jack through let-off! The only danger in using this technique is that it's very easy to get let-off too close. Have fun!! Brian De Tar BDeTar@aol.com "NO OBSTACLES...ONLY OPPORTUNITIES"
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