Dion,

I built the older designed kit ('86) and I don't think there was so much a problem as the instructions were basic and assumes the builder knows what he is doing. It was the second kit I built and it was not a real problem, so I would not sweat it.

To run the G-23 I strongly recommend moving the firewall back about 3", maybe even a bit more. I have a similar engine in mine and you need the engine weight moved back for balance. I made the firewall move after completion. Not real issue. If you do it during initial construction it is simple.

I also second the above recommendation for adding ailerons to the top wing. BIG positive change to the flight characteristics. As with the firewall, I did this after completion and flying a while, no problem. I even did it without removing the wing covering ... have I said how much I hate covering?

Have fun!

Bedford