HS Filtertrons I had a vacation in the States recently and I brought back a set of HS Filtertrons. I have made the Aluminium parts that "Nerrad" suggested, thanks for the design. I took the wiring harness out of my 5122 and closely inspected it, I was concerned about the mud pot! The harness is of good quality with Alpha pots, unlike a lot of members I like them, they are well made and reasonably accurate with good quality control! What I found was that the master Volume was a "B" Alpha linear pot and the tone was an "A" Alpha log pot. I swapped them around and I used a 0.022UF cap.I fitted it all together and plugged it in, these HS Filtertons are pure Gretsch twang and the mud is now gone with a bright linearly tone change down to near the stop. I think Gretsch deliberately do things like this to widen the gap between the 51XX series and the 6XXX series. Nobody would use log pots on a tone control and expect a gradual transition! I only wished I had tried switching the pots and installing the new cap before I ditched the Gretschbuckers, they might just have sounded a hole lot better! If any one tries switching the pots and a new cap let me know what effect they have on the Gretschbuckers it could me a very major improvement for a few dollars(or Pounds.