I have a new Aero Tiger .36 from Randy Smith.. Last week I made a first flight on a Cavalier I purchased from John Simpson.  I take it out for my first flight. Fueled with 4 oz of 5% Nitro fuel.  One flip start. took off nice 4 stroke.  After about ten laps it broke into a very lean run and long story short pulled my arm out of the socket.
The tank is a sort of uniflow, hand made by John. Seems I got the over flow and uniflow mixed up when I installed tubing.
I am passing this on to any that may have this happen. Don't blame anything but two crossed fuel lines. That simple.. Embarrassing yes, but very quickly fixed.