Thanks for the responses. They are appreciated. I believe the board I am using is level. I just purchased a coupler guage, and will get a pliers designed for adjusting the trip wire. Hopefully your suggestions will correct the problem.

Stan

I am new to HO model railroading, and have a question re: troubleshooting accidental uncoupling. I purchased a very basic Bachmann Sante Fe kit, with a diesel engine, 2 cars and a caboose, speed controller, and track. If I had to do it over, I probably would have purchased my equipment seperately, rather than in a kit. Nonetheless, getting back on track, I have had a problem from the start with the engines and freight cars constantly uncoupling, as the train goes around the 36" circular track. Before I expand the setup, I would like to resolve this undesired uncoupling problem. Any suggestions from the veteran model railroaders as to what I am doing wrong, and what I can do to correct this problem? Is there some sort of adjustment to the magnetic knuckle couplers I must make? Thanks for any help you can provide.