Steve you might try using a dab of E6000 glue on the side frame and bolster before re-tighting the screw on each side. I've done this to every one of my freight and passenger cars and it really makes a difference. The glue is avaliable at most craft shops and of course wally world. This stuff even glues Pola and Piko plastic, it is a pretty amazing product. Try it, I'll think you will like it. Sells for about $3 bucks for a good sized tube.
Chuck K
Chuck K
