Yeah a noise suppressor helps, but it only masks the problem ever so slightly, on the clone however, it doesn't matter much, the clip on the other forum was minimalistic noise ratio before I took the level trimpot out of the circuit. The noise on full (or without it) is way worse, it is a phase fuzz fest. Really unpleasant noise that kills all the bass and still got some kind of reverb/delay fuzz trail, something is clearly not grounded right and I'm narrowing down it's possibilities. Actually if I can't figure it out I might go ahead and do something similar to you (gorhrut) and remove PCB, take my spare parts and buy some new parts to get it straight. TWCC and RR480 is clearly not very responsive anymore/ or way to busy. The SP part is really great! The main problem with the GP part is that it is just made directly off that schematic we all know and only a few vague pictures of the original to plot out it's design and also it's errors. I reaaaaaally wish I had the info I had now back then, not only on the mods, but also on the whole aspect of design.
Yeah the forum really comes alive every time Bodom releases a new album, this time will be no different. I really hope they do extensive gear vids/pictures this time as well, and hoping for a better album tone. ENGL e539 and Marshall JVMs are great, but the tone of the last few album is still too sharp in my ears. Too much highs going on. Live the e530 for Bodom pretty much sucks, sounds almost digital. JVM is fantastic in that respect, but it might be time for a change of gear either forward with a Mesa or Randall approach or backwards to a familiar GP approach. Their tone on HCDR was fantastic, and they believe so themselves, so why not try something similar.