That just goes to show that the internet can dish out as much rubbish as useful information... (note to self- be aware!)
The whole 'off-set' coil thing, is this another way of saying that one of the pickups in a humbucker is lower/higher than the other? If a humbuckers DC is rated at 8.0K for example, could this mean that one pickup measures 3.5K and the other 4.5K, or is this too much off-setting?
I've read on another forum, and correct me if I'm wrong again, that mis-matched (off-set?) coils can cut some of the midrange if they have very different readings. I'm thinking this because of my little revelation I've had with my old BB's over the past few days...
The 'mush' I encountered with my first set of BKP's was infact, as Tim somehow diagnosed without even hearing my guitar, due to the eq set up on my amp determined by the BB's mid-range scoop. If Alnico 2 magnets (which the BB's 1 & 2 have) are more mid-scooped in their frequency, having exaggerated off-set/mis-matched windings will enhance the scooping of the mids even more (if my above 'internet wisdom' statement is correct), and that's why my sound was percieved as being clearer, it wasn't, there were just hardly any mids present which fooled me. The 'normal' amount of mids on the BKP's confused me at first, but now I know the reason behind the dramatic change in frequency response and have adjusted my equipment accordingly, the sound I hear everyone else rave about is finally in my guitar.
I listened back to some old recordings with a fresh ear and was surprised just how mid-scooped my previous sound was! I used to play a Shadow pickups made guitar through a Boss heavy metal pedal (HM-2) so I thought I knew what scooped mids sounded like!
The shrill high end and muddy bottom of the BB's on my Les Paul was partly due to this lack of mid-range, and no amount of adjusting would have put it back in there. I thought only metal players cut the mids and don't define my sound as metal atall, so I never considered this, but Tim has well and truely hit the nail on the head. The Stormy Mondays, now pole-piece adjusted on my guitar, are sounding wonderful and I'm achieving really nice vintage tones that feature in the mix much better.
So, I'm seeing the light, I'm not going mad, this has been a real journey into sound...So thank you Tim and everyone else who has given me advice, and just one more small point; these Stormy mondays should be called 'Happy Mondays' because that's what they've made me!