Bruce,
Remember that because it's Proto 1 this engine doesn't follow this sequence of states:
Neutral -> Forward -> Neutral -> Reverse -> Neutral -> Forward, etc.
Instead it follows this sequence:
RESET -> Forward -> Neutral -> Reverse -> Neutral -> Forward, etc.
(And this RESET is not the same as a #18 Reset.)
Are you saying that it appears to be stuck in the RESET state and never cycles to Forward?
Mike