I put a new OS F plug in the motor and filled the tank with 20% nitro fuel.
I did not put any fuel in the carberator just hand spun the prop about 10 times, then hooked up my glow starter and fired the engine up with my electric starter.
After the engine ran for a short period of time (enough to get warm) I tried to play with the high speed needle setting to smooth the engine out some but did not notice a difference in the sound of the engine. I went from 2 turns out to 1 1/2 turns out.
Advanced the throttles slightly and "pop" there went the prop again.
Tightened up the prop, restarted the engine, advanced the throttle and the engine would pick up speed to a point but as I opened the throttle past that point it would start losing RPM rapidly.
Finally got the engine to run about mid throttle and started turning the needle valve in from 2 full turns out.
Up to 1 1/2 turns out the engine picked up RPM as I turned the needle in.
Tried to put a second copper washer on the glow plug as some one suggested this to lower compresion some but the motor would not start.
Took off one copper washer from the glow plug and the motor started up but again popped and threw the prop after a short period of time.
Decided to pull the motor apart to see how things looked but everything looked brand new and I inverted the head and filled it with fuel and the valves held with no leaks at all.

I have not tried doubling the head gasket to lower the compresion. (the one I have is .008 in. thick.
I have not tried spraying the motor with Automotive starting fluid while it is running to see if I have any air leaks. This is where things stand at this time.
Any more suggestions?
Thanks Roy