| Every once and awhile I have the same issue with the neck on my SR506 as well. I would think it's just due to build-up of gunk on the back of the neck that eventually rubs onto your thumb.
Whenever I notice my neck getting like that, I just take a clean cloth of some sort, dampen it a bit, and rub down the back of the neck thoroughly, making sure to wipe up the water with a dry towel afterwards. It does the trick every time, keeping the neck feeling really fast and super slick, which will make playing a breeze. |