It's been awhile since I've been able to sit down and do some serious work mod-wise - some class work, teaching private cello lessons, having to go back to see the folks for one reason or another on average once every week-and-a-half, etc. just life simply. However the time I have been able to spend with the mods has been most enlightening.
For example, who knew that in Math 100 we would cover exponential functions, and how to define them given 2 points on a graph? Using that skill just over the last couple of days I've been re-constructing power curves with exponential functions for the Berks, the Kanawhas, E-1s, K4s, Big Boy, Cab Forward, and pretty soon the Challenger, the Pierre-Marquette Berks and the Erie Berks.
Class lets out on thursdays and doesn't meet again until mondays, meaning that I always have 3-day weekend. I'm going to make the final push to get the SP&S E-1 mod and scenarios done over the weekend and (hopefully bar life) I'll be able to get it into the library soon.
BTW - I think I found a way to get the NKP berkshire around Horseshoe Curve with 759's 1150-ton train
without fudging the tractive effort and I am legitimately excited to develop the next stage of that mod!

Again I am so sorry that this is taking so long - life just keeps happening.