I've had the 40 sized (with a magnum 61 4 stroke) and flown a few of the 60 sized with various engines and now I'm flying the 120 sized with a 25 year old OS 120 4stroke/

This plane has no bad habits and needs nothing to make it "better" in flight. Sure they could look a little prettier but the more I fly mine the more I love it just the way it is. The 120 I got second hand and I assume it's over 10 years old. I have a 40 kit still in the box that when the time is right I will build.

You've got a great airplane there and something that will follow up your next star; I recommend that everyone have one to kick around.