A good post overall, although I must admit I am by default sceptical towards canned happiness no matter what it's said to do. Personally, I use traditional methods, like warm water and kitchen degreasers, but this will be a problem for trim pots and pots in general. Not to me, because I go through the routine only when refreshing a piece of vintage gear, when one of my jobs will be to exchange those pots for fresh ones and those God-awful trim pots with encapsulated, multiturn new ones anyway. The only downside to traditional methods is that you have to allow for full drying up of no less than 72 hours. Using Vladimir's method, I would suggest that you use the opportunity to recalibrate your amp(s) quiscent (bias) current. This is typically set at 20-30 mA for Jpanese and 30-60 mA for European products. Adding a bit more juice pushes your amp more into pure class A operation, but this will also cause your static distortions (THD, IM) to rise somewhat and your heat sinks will get hotter - so be careful. You can read more about this at http://www.tnt-audio.com/clinica/bias_e.html , a text I wrote like 10 years ago.