Hi Nick,
The cradles are from Genesis kits and very easy to make, I glued them to fix them or you can solder them if your brave. (My last attempt was a disaster, melted it, so haven't tried again) The cradles need to be sanded down and test fitted before making, It's a long job but well worth it in the long run. The hardest part is the wagon itself, the deck needs to be sanded or hacked till it's smooth then half of the deck need cutting out, as the proper deck has large areas cut out to aid in the cooling of the coils. The wagon isn't finished as I've got to add the electronic flashes to the cradles and add wagon numbers to the sides. New tops codes to be made and then make another 5-7 for a good rake of them.