What brought this on ... I moved about 5 weeks ago and bought a Mobile Home in PA . The layout had just been built in the old place and I built it to be movable (sort of) . Each section was 4 ft long and I just cut the track at the joints thinking it would go back together easy (nope) . I ended up having to cut 6 inches of track at each end that resulted in a few vertical curves They were not bad as everything else took them just fine , but now I'm glad I fixed it correctly , Mike