/34 & ba11-k regulator allocation?

I'm picking different pieces of various leftover /34 systems to make mine. I have a question about the regulators in the back of the /34's ba11k. Exactly what regulators are required as a minimum for a /34 that is just a dd11-pk with no expansion? Assume just a processor, one memory board, RL11 controller, one DL11W... nothing heavy. I have one ba11 with regulators in 4 positions and one with regulators in positions 1-3. However, one had a RK11D which I'm removing, one had a DD11-DK addition which I won't be using... and I would prefer to remove regulators that won't be used so they can sit on a shelf as spares and not be powered up all the time. I've looked in the 11/34 user manual as well as the ba11k technical manual and I can't seem to put together this info. Can someone point me in the right direction? Jay West