George,
I'm not in a great position to grab my notes at the moment, but here are a few thoughts off the top of my head:
1) You didn't mention that you wired an antenna to the LCRU. If you didn't, it might cause the behavior you describe of no TMCC operation.
2) I THINK that's normal behavior for the smoke output in neutral. In order to prevent cooking the smoke element in neutral, the output was pulsed. (These LCRU1 boards were pre-fan-driven smoke units.)
3) Didn't I get you an extra PIC chip for these boards already?
TRW