I bought a new carburetor kit for the Homelite XL, took me about 45 minutes or less to take the saw apart, rebuild the carburetor with the new kit and put it back together. I ran it for a while and then it got where I couldn't get it to idle down, no matter how I adjusted it. I then realized it was running out of fuel so I filled it up and the idle was back to normal. I never noticed before that these engines ran so fast when they were running out of gas. Some of my saws just die when they're out of gas, no high idle. Reckon something is wrong like an air leak? The H&L screws are set at a little over one turn..