I have dark cherry '66 G-400 PRO with Alnico Classic PRO pickups, with 4-conductor wiring I assume, based on the push/pull coil splitting ability (not a fan of any such jiggery pokery, personally). I love it tonally, but the biggest issue is the sticky nut. Need to lubricate that at some point, and learn how to do it and what to get for it, for that matter. Another issue is it seems to have a bit more hum-noise when not playing with distortion/OD on than my other guitars. Yeah, each guitar has different amounts of noise, but the Epi stands out a bit in this regard, and I'm wondering if it's the shoddy electronics, the wiring job, or if it was done on purpose to make it more "vintage". Seems weird to try to make a push/pull pot-equipped guitar more "vintage", but stranger things have happened. I've noticed that the G-400 and the G-400 PRO both have "Alnico Classic" pups, but the PRO has "PRO" at the end of the name, too. Is it the same exact pickup, but with 4-c wiring added for the push/pull, or are there other tonal/manufacturing differences? Does anyone know? Have there been any dissections on this? I suppose generally not, since they're not considered high-end pups. One thing that's had me curious is how much does 4-c wiring affect the tone of a pickup, if at all, even if you're not using it, compared to a 1-c braided pickup? I'm considering buying another '66 G-400 (I always prefer the large pickguard), black this time, and replacing the pickups with some kind of EVH type set. If this was your plan, would you go for the standard or the PRO version? Would the push/pull pots need to be replaced on a PRO, or could they just be on/off switches? How worth it is it to replace the electronics with Gibson counterparts to begin with? Does their's have less hum, better tone, more reliable, or wha? Other general discussions and opinions section: - Do you think there's a tonal difference between the pickups being mounted to the large pickguard vs. the small pickguard with mounting rings? - Do you think the Epiphone deluxe 18:1 ratio tuners are significantly different from the Wilkinson 18:1 ratio machines? - Do you think darker pickups are better in an SG vs a Les because it already has plenty of thin body snarl?