26 Danman 2 months ago I had a silver-face Big Muff in the early daze. Was prone to knob breakage, often the stems, which appeared to be some kind of nylon, would fracture deep inside the pot. This was in the days before Crazy Glue and nylon was not the easiest substance to glue back to itself. After a couple of annoying instances I stopped using it. Wonder what happened to it...? Have not seen it for a couple or three decades. It's around here somewhere, though.Mostly, I play clean, and have done so for a long time, so I actually don't have one that works in my kit. But like Prot, I have had the occasion to lust after Bachman's "No Time" tone, so there may be hope for me yet. Perhaps it's mine now.... ; ) But actually I think mine has the original pots so that's not very likely... I now mostly use a Fuzz Face mini with the Germanium transistors. It's simple to use, small and I like the sound.