Hey, i have the fulltone bassdrive (mosfet) and i find the exact same thing, i like it best when i have my clean boost on before it.
Its frustrating having to double stomp, i was wondering whether to try and find someone who could mod my fulldrive or put the guts of my cleanboost inside the bassdrive or something?!? Ha ha
Now I'm on the look out for a bass rc boost, but i was thinking of having it as an always on pedal.. That way i guess my bassdrive will sound mega because its got that rc booster feeding the signal, in the same way my clean boost does now.
Did you make any progess with yours??
Cheers