I run a small studio and have built many pieces of recording gear successfully. Figures my first amp mod and I botch something. I read about a mod that would increase my amps headroom by removing two LEDs. So I used a soldering pump to remove the two LEDs in my Vox Pathfinder 10 (V9106), plugged it in AND... nothing. It still powers on but that's as far as it goes. Has anyone else had experience with this mod?