Wow I'm very sorry to hear that, I don't even know what to say. Maybe build it like it just rolled at the end of the track, all the detail will still be amazing because you are a true artist. Best wishes Bob.
Small update after much tinkering and cutting I decided that the Cudas undercarriage just was not going to work. I will instead be using the Darts undercarriage and drive line modded to recreat my 1:1 here are a couple pics of where things are headed. The wheel base on the Dart kit was way off so a little cutting was in order, I think when this is all tied together things will work out fine.