I did some troubleshooting, and one of the joints had a little bit of solder on top of the rail, and the other end has a kink in the rail. The 2-8-0 now is able to run through it fine going forward northbound, but derails any other way. I pulled out my L cab SD-40-T2 snoots and they went through without any issues pulling 5 MTL freight cars. Looks like I am going to be doing some track work. I already need to lay three sidings and get some ground throws.