I haven't used TTS-1 in a long time but if I remember correctly you could modify a patch then save it in the user section. Thus you could lower the kick drum volume and safe it, then later use that kit in your song(s). YMMV

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware