When I try to run my post war engines on my TMCC layout by using the CONV mode my engine runs fast and can't be controlled by my CAB-1. When I unplug the system the engine stops when plugged in again and then reverses when plugged in the next time. Typical old post war reversing operation. I have reviewed the Lionel manual and followed the short troubleshooting instructions with not luck. I have checked my wiring and it seems to be correct. Any ideas?