MTH solid rocket transport up set

I received my set last afternoon,(UP mth solid rocket transport)  what a beautiful huge 8 axel cars, I hesitate for a few years to add it to my collection afraid they will not fit in my layout due to their width 3 1/4" I had no problem, even they are huge they fit pretty well with a little more hang out, about 1/8" more than a premier 70 fotter passenger car.
I adquiere this set from Mr. Muffin. I order it Friday night and get it next Wednesday free shipping, couldn't believe. When I tried to log in the engine in my system it read ENGINE ERROR I email Mr Muffin costumer service  about 9:00 pm and they reply me with what to tray and offer me the alternative to send the engine back for a replacement if I could not fix it, I did what he suggested, reset the engine from the Z-400 transformer. Here how to do it, tap whistle-horn once, tap bell bottom 5 times, engine is reset, place the engine back to track log it in and there is this beauty running.Once again thank you Mr. Muffin, I am still wondering how you have customer tech support at midnight lol, thanks