William,
Sounds like you¡¯ve taken the steps to isolate the other track such that there is no conflict if only a single train is entering the AR segment from either entrance at one time.
If the train continues to move, the double click you hear is probably not the sign of a conflict. If the AR wasn¡¯t working as designed (and desired), the train would probably stall and hopefully your Circuit Breaker would pop. Certainly a lot more than ¡°double clicking¡± would be anticipated from the AR.
Bill D
N&W Steam Only
