Re: JEM7V - Sounding a bit... muddy
If anything Evo's are notorious for very biting high end tone, especially the bridge, and are anything but mellow on the high end. The neck Evo, and I'm biased because it's my favorite neck pickup, is extremely clear and articulate even under high gain, at least more so than any other pickups I've ever used.
I've tried a few BKP's like the Miracle Man's, and Nailbomb. They are great pickups don't get me wrong, but I'd rather play with Evo's in my rig.
Still think you have a wiring issue sport...