Tascam Model 12 (as interface) users: what's your input level?

I’m finally getting wise to the “not almost clipping input” propaganda, but I’m curious where you fellow Model 12 users are setting your input gain knob if you use it as your input device. I know I need to back it way back down from “almost clipping”, but I’m not sure where would be ideal to best represent what the NDSP plugins are looking for, sound level-wise. Thanks!