On this saw it is hard to start. it will try to start on the first pull. Then you have to take the choke off, lock the throttle in wide open position, and pull the rope several times to start it. once started it runs great, goes from idle to wide open instantly with no hesitation. It idles great. I have tried adjusting the carburetor but only makes it worse. The carb adjustments are currently set at one turn open from seated on both the high and low sides. Does anyone have a suggestion what I can do to get this to start normally? Thanks in advance for any help you can give me.