No need for apologies David. It can be difficult picturing a situation without a diagram.?

Thanks for confirming what I had suspected. The parallel tracks exiting the loop does complicate the situation a little.

After some experimentation I also realised I made an error in how I wired the parallel tracks exiting the reverse loop. My initial thought was maintain the polarity of the track into an out of the loop. This means the two parallel tracks had the opposite polarity. This worked okay until I installed the crossover. This caused a conflict which took some time to work through. I think the correct approach is to consider the parallel tracks as one, same polarity, and let the auto reverser do it's job. I will find out if this is true in the next few days.

It's been a long time since my first, and only, reverse loop. In DC and a simple DPDT switch. But I am enjoying the challenge................George.??