i too am working on a slow coach. busy schedue hinders my progress. for the roof portion, I plan to use the wooden chop sticks from take out.
My Trackmaster/Tomy/Plarail Photo Gallery Page (over 600+ photos and still under construction)
https://www.flickr.com/photos/183311600@N03/
https://www.flickr.com/photos/183311600@N03/