Do now.

More than one locomotive, but am slowly isolating switches with this issue. It appears to be a short, but only lasts a moment and if module is reset to desired slot, operation resumes. Found one locomotive where the hose part of coupler was catching the frog and creating a short.
Appears to perhaps be a design problem on my part and I will hopefully correct as time passes.

Greetings;

Intermittently my controller will default to position one when operating locomotives in positions 2-7.

Only happens when locomotive enters a switch. Not specific to a particular switch.

Suggestions?

Gerald GeRue