i am buliding a model roller coaster. i actually design them so i dont want a kit. i need help on the train on the coaster. the rail is rounded and made of coopper tubing. what could i use for the rails? the whells are on the top the side and the bottom of the rails. can you tell me where i can get some wheels for the rails. im not sure how wide the rails are but it will be just a little wide.:thumbs_up::thumbs_up::thumbs_up:
