I have a 211 duplex, where both cars sit idle. Neither car will move to answer hall calls. Looks like car 2 is losing its ring communication. 1 press of the reset in controller 2 and back in service they go. Usually good for about 3 to 6 months. I have not spent anytime troubleshooting this issue, I feel a simple board change outta do the trick. anyone ever deal with a similar issue?