Turn the Voice control higher? Not gonna help you with the bass loss, but that's how tubescreamer-y circuits are. Zendrive's one of the smoothest pedals I've tried though, maybe other than the Blackstone MOSFET Overdrive? Try that.
Sounds super awesome on a clean platform amp. Wants to be boosted, good for Fuzz Face types, octavias, and treble boosters.
I used to rock the Fulltone '69 + DLS MKII combo on my Fender DeVille, but then I downgraded to an Orange Tiny Terror.