Have#2026260 ANH Bush 8K tank car with the funky trucks. The car was made in Vietnam. Had to file the inside of the truck and the knuckle on the outside just to keep it from derailing on 072 curves. Not good what junk. Still hard to connect or disconnect with other Lionel cars. So think it is looking like the cars made in Vietnam are having the truck problems. Have other new Lionel cars made in China no problems.