I always wanted to pickup a centerline track cleaner but could never justify the cost. Thought I would share how I made use of a slightly warped MTH "B" unit frame that was also suffering from zink rot. I was able to cut the frame and frame in a plastic box. I then cut a previous cleaned paint roller, added a piece of bronze rod in the cut roller that I had in the garage for weight. I then soaked the roller in rubbing alcohol, and away she went. Worked pretty good. Now I need to add a platform, maybe some tanks and handrails and I'll use it until the frame decides to crumble the rest of the way. Thanks for looking.
Jeff