I'm not on speaking terms with my 51 8N now for about 2 weeks. This engine has 5.4 hrs on a total rebuild and fired right off, however it became progressively harder and harder to start. Now absolutely nothing. Not even a cough or fart. Compression is around 115 psi at each cylinder. Carburetor was rebuilt and working fine. Gas in the tank, gas in the bowl and staring fluid in carb throat makes no difference. Ignition is new from the plugs to the distributor bushing. Hot spark at each plug. I've static timed this ignition using 3 different methods (2 from the How To section and 1 from the Ford operators manual). It definitely seems like there is no fire at the right time. This engine is not complicated but has me throwing in the towel. Help on how to proceed next would be most appreciated. Thanks