Well im no expert either. In fact the more I poke around on here, the more I realize I dont know.. lol. Anyhow it sounds like its starving for fuel. Partially restricted fuel filter? pinched hose? something stupid??Or id go back to the carb if you can verify all else is up to par, Timing, Compression, Secondary ignition? Vacumm leaks are sometimes hard to find also. Spray some carb cleaner around carb, intake, vac hoses. Idles smooths and climbs..Bingo.