Just as a follow up, these are really great flyers! I built the ACE
4-60 about ten years ago and gave it to my friend when I took a break from the hobby for a couple of years. I had kit bashed it to look like a Fairchild PT-19. I have advertised on this site several times looking for a new in the box kit of the 4-60 and never got any responses. I would love to find another kit. If I can't, I will probably scratch build one from the original plans.