No need to be sorry, I'm also concerned with the curves of the track nearest the foreground on the side of the RH and the one next to the lead-in track. I think the others should be ok. My longest single engine is probably maxed in the 16" -17" range (maybe 19" - 20" for steam engine and tender) and all are designed to run on O-31 track.
I haven't been able to test, since the track needs to be screwed down and wired up to get from the bridge onto the potentially offending whisker track(s). The longest engines will be stored on the straightest tracks and, on down, so the shortest are on the tightest curved. At crawl speed I think it should work.
I am prepared to remove a track(s) if it does not. As I said, my wife thinks it's too crowded anyway.
