Today I put in a new plug, and took the covers off the carb and cleaned the screen. I also took out the needles and blew cleaner through the openings, and in both cases it came out the carb interior. I did notice that on one side of the carb the rubber sheet (diaphram maybe) was beginning to delaminate, but only on the part outside the cover which hooks over the little nubs. I tried running the engine and adjusting the needles, but same thing as before. It sounds like it wants to run, but can't. The grass under the exhaust seems pretty wet, like it's getting enough fuel. Even though I put the hall sensor back in the same spot, is it possible that the sensor itself was not in the exact same place on the metal mount as the first one? The engine did see like it was a little hot, but seeing as how it only got to a few thousand RPM I don't really know how it could be. It does sound like its four stroking, just not able to break into two cylce.
Thanks in advance for any more advice.
Sam