In this update, I tried Joe's suggestion on the touch up. It looks to have worked pretty good, so thanks for the tip again.

Tichy recommends a mix of Boxcar red 70% and Tuscan red 30% for the car ends and ice hatches. So this is what I had on hand. Poly Boxcar red and some art acrylic Tuscan red. Gave the mix a try and it worked out good.

The end result on the ends.

Thanks again for following along. More to come...