Thanks for the offer. I ended up having a spare R4LC-08 in my parts box. ERR sent me two when one of the ones they sent me with a Cruise Commander wouldn't allow the front headlight to turn off no matter how it was programmed. The told me to keep the extra R4LC as a spare. So I used it in the Consolidation. Would have been easier if I remembered I had it before I swapped the R4LC out of another locomotive into the Consolidation.
I'm going to pick up a triac and try replacing the one on the defective R2LC as practice. Plus then I'll have another spare radio board.