?? for those that have used Round Dowels for track bed support and for those that have used sheet rock shims for overhead track side profiles:

Curious as to what diameter wooden rods were used to support your upper level and for those that used the shims fpr overhead track side plating how far apart did you space the match sticks or bass wood strips when adding the "rib" details?

Thanks and please post some pictures if you have them to assist me in my build.

Ken