Help! Honda CL70 Problems.

[Dioxin01]

So I've adjusted the valves, the ignition timing and set the carburetor to the specifications in my Clymer manual. The spark plug works perfectly and it has a new battery and ignition coil. All this and it will not run. I got it to start for a few seconds but couldn't get it to start again afterwards. However, it would run before I adjusted the valves and timing (but not very well). It would begin to die and shoot flames out of the exhaust after applying 1/4 throttle. Another new problem is that the the petcock (or the metal inserts which connect the petcock to the fuel line) is worn and now leaks. Would this cause it to not start? It's not a very big leak, about 1 drop a minute.

[TechTMW]

Hey, did you ever fix your problem?