The engine turns over very smooth. The engine reved just fine with the same prop before the problem started. The engine peeks out well and idles well, it just take a good 5 seconds to get from idle to full rpm even when the barrel is opened quickly. it is the same from half throttle to full throttle, slow increase in rpm until it reaches full rpm. At any throttle setting, it holds a good stable rpm when it gets there. Its running a good vapor (oil ) trail. I will try and lean the idle and retune the high end tonight as well as change the glow plug just to be sure and let you all know if it solves the problem. Originaly I thought it was a partial blockage that would allow the engine rpm to increase as the pressure in the tank increased slowly that's why I blew out the needle valve at the field but did not have any change. If the idle mixuture change does not solve the problem then I will just disassemble and reassemble, that always seems to fix any problems and everything gets cleaned up.