Got the active preamp to come on eventually with some wire jiggling. Just going to take it to a tech to check all the connections and do the K switch mod for me as well. Digging the tones I'm getting from this bass - so I do think it was the right choice. Very excited to get it modded and open up more of the tonal possibilities. Thanks again for the advice everyone! I may check back after the mod just so there is a bit of finality to this thread for people searching this same thing in the future.