1. I run my antenna wire out the side and up to the top of the rudder.

2. I use a plastic spinner on mine (with a saito 72), and it seems to work fine.

3. I tossed the stock fuel tank and put in a Sullivan tank.

Suggestions:

Reinforce the firewall. I had a somewhat minor landing incident, and the firewall, engine, and fuel tank sepearated from the plane and went rolling down the runway.

I also replaced the stock landing gear with a set that is stronger and a little taller (helps with clearence because I'm using a 13" prop with the 4-stroke engine).

Overall, it is great flying plane. The YS 63 is a great match, will give it unlimited vertical.