Please help i am new at this hobby and need help I just layouted a nice track plan and with a little help it came out real nice. i am running two trains on two the different tracks and my main problem is the ez mate couplers for both train are always undoing it is driving me crazy ever other turn the couplers are coming undone. I replaced a couple of couplers but nothing has changed could someone please offer some advise as to help me.. thank you Joe