overwind your pickup won't do it for you
what pedal and settings are you using?
what's your amp?
usually tube screamer type of od pedals tend to make your tone sound thinner and focused
its a Zakk Wylde overdrive. i bought it before i got a real amp. i don't really like it, but i figure it was fairly expensive and to get something better it'd be a good deal more. my amp's a marshall 3203 artist.
i use this pedal with my peavey rockmaster and my leadvox leadmaster preamp (basically a soldano SLO preamp with an extra gain stage and less gain cut)
it makes my holy diver sound tighter and the bass sounds fatter, not thinner
i use the level on 10, tone on 6, drive on 0
with my ex-guitar with miracle man i was using the level on 7.5
i like it better than tube screamers
it's a lot more effective as a booster and make tube distortion sound heavier instead of thin it out
maybe you're trying to add the drive of the pedal? :?:
it makes the distortion sound artificial and noisy
i don't know this Marshall 3203, but i think it has a solid state preamp and it's not so gainy
you definitely won't get a full tone without a boost