You can probably fix those old Athearns. Check out Youtube before you throw in the towel. A little cleaning and soldiering. Don't put any lube on unless you know what NOT to oil. I still have my old Blue Box Athearns I bought in the 1970s running. Some of them I bought used then. I think the rubber band series is 1950s. They can be tricky. Haven't owned the band drive type but I'd love to have one to tinker with. SMT Mainline is a YouTube guy who fixes them. Great videos. Athearns are the Small block Chevys of model trains.