Just got back from practice with the pub band. Gees, this 300e is good.
Wind all 3 preamp dials back to zero, a tiny bass boost, and flick switch to single coil, blend in the middle. Amp flat with the tiniest bit of drive on and it's a wonderful wonderful sound. Really prominent, but warm.
The key (on this one anyway) is to wind the preamp off, and add the tiniest of drive.
Very light, no aching, and easy to play. Everything in the right place.