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Kaddee and other knuckel couples uncoupling? Acording to some it can't happen. Here are the solutions. The first three are mandatory. First, only use the ones with the metal coil springs. 2. buy a kaddee couple height tool and set all your couples for height and "air hose" height and free swinging without droop. 3. dips or bumps in your track cause it big time, level them out. 4. paint your couplers with ceramcoat burnt sienna on the inside faces where the couples pull against each other. This added roughness can fix them, but too much can cause uncoupling problems by sticking springs and joints. 5. Use "dummy" couplers sold for unit train use. They look like knuckle couplers but don't uncouple and are lots cheaper. 6 put a small piece of wire on the axels on one truck on each car to generate some pull, keeps them from jiggling loose. 7 put the hornhooks back on. Welcome. FRED
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