You posted this: "Today, I reworked the couplers by filing down the knuckle on the inside as well as by the rivet. The reworked was a successful. The coupler will now connect with older Lionel couplers and there is a slight play or gap between mating couplers."
Today I picked up a set of newly released NYO&W hoppers only to discover they came with these trucks. I will put them on the track and test them with my other NYO&W rolling stock. Due to the unfortunately excellent possibility that I'm going to run into the same trouble almost everyone else has, please post some pictures/video of what and where you files these trucks to make them work. I know this is not the ideal way to do it, but I have serious doubts Lionel is going to do anything at all about the problem.