Found 2 cars out of 6 that the weights were loose in the car. The selection of using glue between plastic & metal in most cases has no reliable bond as it adheres to plastic, not metal. Looks like they should have chosen RTV to secure these pieces. Also the screw threads are questionable as some of them spin with minor grabbing power when holding the new 3r non-sprung trucks. I have to wonder about the pre-testing and engineering of these new items prior to production.