Hi Don. No... havent tried anything less fluid then valve oil for trumpets. Could be interesting I suppose to see just what different <<additions>> to a string will affect false beats and how tho. Wax comes in several different varieties... ski wax etc. Any other good ideas ? I had kind of speculated that Protek seems to work by kind of automatically dispersing itself along the string.... but really have no basis other then pure speculation for thinking so. Cheers RicB Hi Ric, Have you tried rubbing paraffin wax (candle wax) on a string to see if that ameliorates the problem? Don Rose
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