RE: topflite elder 40 build
I built one about 3 or 4 years ago. Great build. One thing I would suggest is making the rudder bigger. Mine didn't have much authority stock. One of our ace pilots flew it in a little bit of a cross wind and it was easy to tell it needed more rudder. So, I made a bigger one and made it round insteas of rectanglar. I didn't scallop the edges as in the stock one, 'cause I wanted to get back in the air quicker. But it made one hellova difference. Flys great. Good Sunday flyer. I just did the cowl top in red Monocote, instead of aluminum, to match the rudder but it looks fine to me. I think you'll love the build and the flying.
John