I have one permanent uncoupler magnet on my main line that loves to uncouple my cabooses. The trains expand and contract like an accordion when in motion so I suspect slack is causing the problem as the last car travels across the magnet. I've added an additional 0.25 oz weight to the car giving me 0.97 oz total which is slightly above NMRA recommendations (at least as far as I can tell). Even with the added weight, I still have problems losing the caboose as it travels across the magnet. I don't seem to have the same problem with any other cars. Coupler heights appear to be close but then again I don't have a gauge to double check for accuracy. Any thoughts?
Eldon
Eldon