So I tried to explain an idea for a scratch on here (unsuccessfully) a few weeks back but couldn't demo it as it was just an idea so unsurprisingly, people were bemused by it all! Have now managed to nail it, albeit modified from the original plan. I changed it to "palm up" because once you build a sweat up, your fingers simply glide over the spindle too smoothly to actually affect the sound! Am disappointed I couldn't nail it the first way, but the weird hand-movement is growing on me! Next goal will be to adjust the space between my fingers for a slower roll and explore using different numbers of fingers or even dropping a finger (mid) for a "da, da, ... da" effect. Anyway, enough nonsense, here it is @ 9 seconds: