I have a Traynor YGL Mark 3 head. It was modded to sound a litte more Marshally on one channel a few years ago. Kind of has a JMP thing going on. The reverb was sacrificed for a paralell effects loop. The amp sounded incredibly tight when it was first modded, and was my all time fave amp for a couple of years. Then one day, something went in it, and since that time, the attack of the notes is not as tight or clear. It's a little blurry and squishy. I have taken it back to the tech, but he can't find it, or rather won't try. There is a serious shortage of techs in my area, and I have a friend who helps me out, but major mods are a little out of his comfort zone and we could use a nudge in the right direction. Without going over the entire history of what I have replaced in this thing, here is what I can verify are NOT the source of the problem, as all of these components have been changed, A/B'd individually one at a time, with mutliple options in each. None of these addressed the problem. Anything to do with the Guitar signal Speakers Tubes All Coupling Caps The filter caps in the preamp and PI are the original Mallory mustard looking things at 40 mf. I tried replacing them, but it didn't fix the problem. I also played with a few values, but while it did make the amp sound more and less "tight" it didn't fix the blurred, squishy attack. The caps in the power section are the JJ black cans with 2 100 mfs. I even ordered more E caps to try replacing these, in case they have gone bad. I have also ordered Electrolytics to replace everything in the amp. I assumed that would be another good place to start. My intent is to keep replacing every one of these items one at a time, listening before and after. This is taking hours, but I am learning a ton. I will also add that the trem circuit oscilates. I pulled the tube out, which I think takes it out of the circuit. The oscilation stops, but the squish remains. Anyone have experience with anything like this? Any advice on where you would start your search? My tech did not give me a schematic of the work he did, but it the layout did not change from tight to squish.