If it was my bike David, I check the entire fuel system. First check if the carb is getting gas by pulling the fuel line and opening the petc*ck. If the fuel is flowing real slow or not at all, clean or replace the fuel line and inline filter and petc*ck filter. If the fuel flow looks sufficient, remove the carb and clean it throughly. I have a feeling if you get good fuel flow and the carb is cleaned well, your bike will run like new.