OK, I carved a o-ring into a worn tennis ball, the rubber of which happens to be the very same colour as the Vallon. No wobble any more, and way, way less noises. Thank you Mr Foster. You reign !
Still some noises though. When I replaced the armcuff, I saw the cord to the coil was covered in dust (Afghanistan ? Iraq ?). I'd clean the inside of the tube down to the soldering points of the plug, but with what ? I think pouring alcohol fuel and shake the tube...
Still some noises though. When I replaced the armcuff, I saw the cord to the coil was covered in dust (Afghanistan ? Iraq ?). I'd clean the inside of the tube down to the soldering points of the plug, but with what ? I think pouring alcohol fuel and shake the tube...
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