Jim I scaled up a canard, (Shinden, a pusher) and the OS got hot real quick because I didn't have a cowl on it-live and learn. Anyway it was leaking down because of that is why I replaced it. BTW balance point is quite a challenge on a canard with engine in the rear.
Bud
Also thanks Randy for the info. It was my first foray into the OS, so I just never noticed the small gap until I had it apart. Boy what a great engine!
Setup is 9/32 venturi, 6 oz uniflo, Big Art tongue muffler, stock nv-seems like anything I tried other than this was downhill. Just too happy with it.
Bud