Guitar/pups do make a huge difference +1 for LP/with SD JB bridge.
I can suggest red channel (normal mode in back), cranking the LAM (if you use this as a MASTER VOLUME?) to about 11:30, back off the gain, @ 1- 1:30 and Channel master @10:30.
presence noon-ish, bass 1:00, mid 11:00, treble 12:30.
Also, if you do have the loop engaged on orange and red, try this...
if you have a parallel loop (no efx running through) make sure the return level is at 0%. there's a noticable drop in tone when it's up at 100% when you're not using efx. check it out.
if serial loop...wide open.
Should be able to get really close to that tone but again he used multiple rigs/overdubs to achieve his sound.