Bachmann 25024 On30 Scale White Pass & Yukon Train Set

Locomotive had alot of gear or motor noise at first but after about 2 hours it has quieted down . Reason for only 3 stars is the track. Gray plastic track base is warped so it has a profound hump in it. So much so that the cars sometimes become uncoupled. I bought some of the lower quality black plastic base track and those pieces are all flat. The only way I could get the train to run was to place shims under the track where the pieces join together. The cars still go up and down but its just enough so they dont uncouple now. The gray track is supposed to be higher quality.