Anyone Here Into Model Railroading?

[GOPAPA]

My wife surprised me in wanting a train engine and cars plus caboose ,so for Christmas a few years ago after moving here I bought her one .. It's placed on the ledge shelf in our front room.. go figure where she wanted it I guess ,,that was another surprise to me ,,anyways that's where she wanted it.. I GOOFED and did not get the Caboose so off ebay I got one ,,but it is bigger than than it should be for the others .. never changed it ,,but I would like to some time . need help getting the right size to do so