I have mixed feelings on this topic. 4 of the 6 milk cars do line up when strung together but tend to be off when coupled to an older Mill car (2016 and earlier). I have purchased a bunch of trucks before Weaver went out of business and have purchased a bunch of MTH trucks on EBay, Amazon and Marketplace. I am going to see how these line up. Hopefully they will but if not then the new cars will be at the end of the train I run as when they are behind the engine cars 1-4, they tend to derail.
still trying to figure out what’s best. Hopefully just a truck swap until Lionel produces a fix.