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[quote]QUOTE: Originally posted by grandpopswalt I use the # 830 couplers primarily but also use a few other G scale models as well. I intend to do a LOT of switching and therefore keep the pins in my Kadee couplers. However, I have not been able to achieve 100% reliable uncoupling. I've done all the recommended procedures, filed and sanded all the surfaces, burnished all surfaces with graphite, and mounted all couplers exactly 1 5/16" above the railhead. The trip pins are exactly 1/8" above railhead. Still, 1 out of every 5 uncoupling attempts fails to seperate the couplers. Does anyone have any suggestions? Walt [/quote] Walt, are you rolling slowly over the magnet or stopping? I remember from my HO set as a kid the tension from the weight of cars trailing will keep the slack non existant and tension on. Have you tried backing over the coupler slowly to release the tension ansd increase the slack? I haven't used Kadee's since that layout my Dad built me so I'm unsure if the info I just gave you is helpful, let me know.
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