Elliott it looks like only one choice to me with the quality of your layout. Gotta fix it or you will never be satisfied.
Bill, that may be where I end up with this. I still have to check the Atlas 89' flat, a 21" passenger car, and the 86' boxcars but I think they're all good. It's just those dang ladders on the auto racks that I have found, that are hitting. The Challenger will have a problem too, but it won't be taking that route and will use the small helix and small hidden yard, which it clears.
There is one more critical test that I haven't been able to perform as of yet, and it may be a while before I can, and that is will those cars go through the big hidden yard? There is one spot in particular, and that is the big hairpin turn seen here, in this very old photo.
The curve diameters are 092, 084, 076, 068 and 060. There was no choice in this design and it cannot be changed. It is what it is. The curves at the far end should be fine, because the tightest is 072 and they go up to 0104.