Having been advised by several memebers here to try a Ton Kooiman Maestro thumb rest as a cure for my pain while practising and unable to aford the Maestro I purchased a Étude 2. All I can say is FANTASTIC. No pain more control and instant relief. The Étude cost under £20 so I can afford to buy one for each of my instruments. Thanks folks for the advice. I would recommened it to anyone, sore joints or not. now trying to persuade my buyer in the music shop I work in to stock it and put up a display.