I have a 55-02.
DA XL170 nickel rounds, strung thru.
I run pan biased towards the neck just a tad, bridge pup in the middle, all the tone controls +2 from the center detent...
IIRC, factory dip switch setting is 650, not 500...could be wrong.
While I love the sound of the Barts solo'd, I find they just-for me anyway-lack grunt and punch in a live mix. I think my next "gear whore moeny" will be spent on the new Lakkie pups and pre. From what I hear, these have much more "push."
I've spent some time with the new Lakland pre. Actually, I find the new pre to have less 'grunt and punch' than the older Bart... more wide... much deeper low end (must either be a lower shelving point than the Bart, or some sort of very wide Q), and the treble is much more airy and sweeter... closer to the AG OB-2 treble tone than the somewhat clacky Bart. The mid control sounds about the same, but has more center point options. I like the new one MUCH better than the Bart, but I think it will move the tone in the opposite direction versus what you are describing.
I've heard the new pickups described the same way (but have not heard them)... with the tone profile moving a little more toward the 'crisp, clean, hi fi' tone of the EMG's versus the very mid growly Barts.
IMO and IME.