I am finding that the S FasTrack 30" straights can only be ordered in a bundle of 10. So I ordered 10 yesterday. Particularly with the extended layout to 4x10, I need more straight lengths than previously, and will replace 10" straights in groups of 3, to be reused in different areas.
Two activities to do now: test the PSX-AR-AC, and purchase and cut a 2" 4x8 sheet of foam, to add 1' of width to make the 5x10.
Train and turnouts continue to run well, with no issues.