I've been browsing, and gotten some decent ideas (some of which I've used before) on how to make this work, but there's something still wanting. Unfortunately, it's just not feasible to do any double tracking at this point. Virtually all of these songs have 4 tracks per guitar: 1. Close mic 57 2. Close mic 421 3. Room mic (ribbon or condenser) 4. DI Some have just #3 or #4. Typically I'll just balance the guitar w/ keys or another complementary instrument, but there isn't one in this case. I've tried using delay/verb send/etc on copied mono tracks before. What I'm wondering is, would panning the 57/421 L/R do the job? Obviously, for those songs that have a DI track, I can just re-amp that. Not quite the same, but at least I can take advantage of different amp/micing.