Has anyone used these much? My new layout plan uses 2 of them in crossovers and I'm wondering how general engines do on avoiding deadspots. I've already seen where someone had issues with a yard switcher with a wheelbase that was perfectly matched to the two plastic frogs, but what about steam and road diesels? Particularly I have a Bachman 4-8-4 Northern and a E-R Models Baldwin RF-16 Sharknose A-B pair.
Better yet, does anyone have actual dimensions for the distance between and length of the plastic frogs on it?
Here's my layout plan for reference:
http://www.trains.com/trccs/forums/2/991582/ShowPost.aspx#991582