Hi guys, I was lurking here for a while, until I recently (just the day before Christmas!) acquired a Marshall Lead 100 MOSFET head with the matching 1965A 4x10 cabinet (with beam blockers pre-installed ) Anyway, I've become quite a believer of this amp as I was able to crank it really friggin' loud and it RAWKED! Almost tube-like. I of course used a footswitch for the channel switching and to avoid the channel bleed/cascading. It's close to mint condition and it turned out it was a 1984 (S-serial) made one! (black cloth, not the discolored brown/tan one though). I saw some threads from Wakjob about his mods of the Artist 3203 and another Mosfet head (the Twin Reverb I believe and the 3310) and I was wondering if some of these mods apply to the Lead 100 Mosfet head as well? My wish-list: -clean channel more clean (now I have to keep the Volume below 3 to keep it really clean). -drive channel more max. drive possible -a bit more low-end, and maybe a hint tighter too. I noticed lowering the R5 resistor wouldn't help, as for the 3210 it's the footswitch LED resistor and not in the Boost channel's gain circuit. I won't tamper with the drive LEDs, as I understood they're integral to the tone (and having built quite a few guitar pedals years ago, I know how cool LEDs can sound in a DOD 250/Dist+ like drive circuit). Would lowering R6 (47k) help here or should something be done with R4? Any help would be greatly appreciated.