Hi Bill,
Cannot speak for Alex, but remember how at the height of his quest for the Straight checkers crown he found an outlet to relax composing on the 10x10 board, where there was a very vocal and creative community. I recall worrying for him for 10x10 is a very different game than Straight checkers and the way Alex jumped in it seemed that it took much more effort than just to relax. But he proved he could do both, winning the title and defending it for many years while also actively engaged on a different mental battlefront finally winning a second place in the world composition championship. If he is not composing in Straight is probably that so few are engaged in that, besides you no one say a word on this forum for example, Alex likes (I think) be engaged in arguments and conversations, but you guys do not engage much.
As far as my conversions. Yes, I do make changes, I try to bring the ideas from one game into another, it is not a 1:1 setup.
For example this was the original Pool position but it did not work in Straight but I managed to recreate the idea to suspend a checker in the middle of the board in a very different setup.

_
