is that a custom shop thumb. bubinga pomele omfg... must be custom shop.
resetti - wicks are like sex, once a week. i will unhang the wick, rub it and caress it slowly, put it on my lap, take a nice flint free cloth, rub a bit of wax and gently rub it, all over, caressing every single grain, and than take a clean cloth, wipe all over...
but btw the stains one needs lesser love, but they still need love, the ovankal neck are unfinish and raw so that need to be stroke gently once a week. but wick tech support say, the oil and sweat from your palms finger is sufficient need to keep the necks enuff oil ;p