I am going through this right now. I acquired a beautiful Epi LP flame-top with Lace Sensors. A nice clean thin sound, but no LP growl. I had a set of Dimarzio PAF Pros kicking around, so I swapped them in. Not much of a difference in tone, but there is more punch due to the hotter winding. I was rather dissapointed not finding much tonal diffences between bridge and neck. In fact both my amps (tube & SS) have to have the treble turned way down. Where is that typical mellow LP tone?

I am thinking that the issues lies within the caps. Not sure what in there now, but they appear to be plain stock. I read that many people raving over Bumblebee caps, so I ordered a set of .022's. They claim to have a woodier tone.