Okay @Matt_GNo27 Good for others to know. From some of the complaints I've read about both this 70 ton switcher and the scale 44 ton, it sounded like a similar problem which can happen with this style coupler, link below. You can see the "T" pin, and how the coupler arm pivots on this pin. The sides are lower and the back of this is higher... like I mentioned before, sort of like a roller coaster. This style was also used on some of the RMT loco as they were produced at Sanda Kan.
https://estore.bachmanntrains....qa8k90lpprrh459ris82
So it sounds like what you're saying Matt, is that the coupler is attached to the body frame and not the truck. I re-read your fix for this and I'm still not sure where it is attached, though it does sound like to the chassis. Your fix instructions are certainly clear enough.
It is too bad the manufacturers and/or designers don't double check these products a little more. Just because a product is shorter in length, doesn't guarantee successful operation on 027 curves. If everyone remembers, the initial run of RMT BEEPS were doing the same thing: Derailing the first car the engine was pulling. You needed to take a Dremel and enlarge the opening for the coupler. Though to RMT's credit, once they were aware of the problem, they altered the design on later production runs.
Thanks for your info on this. You actually have the loco.
