I recently helped a friend upgrade his two TIU's and two remotes to 6.1 with the help of Nicholas, Customer Service Representative, MTH Service Department. He was very knowledgeable, professional, and assisted me with the entire process. He explained everything and walked me through the process. I was later able to do it on my own when I got home and upgraded my five TIU's and four remotes with no problem. He is a great asset to Mikes Train House. Thanks Nicholas!
Rich G. (New Jersey)