Repair Shops: Model railroad repair shops/service centers worldwide. This section of RailModeling.com lists the model railroad repair shops and service centers that offers repairs on all gauges of trains from Z to G scale, major brands such as Lionel, Marklin, MTH, American Flyer, LGB, etc. and more. Click here to list your model rr repair shop/service center for free in our directory. We are adding new repair shops on a regular basis, so be sure to check back!