I have a Makita 6401 that is driving me a little crazy. I just got it back from the dealer after taking it in because it wouldn't start after it got hot. It would start and run right after you shut it off, but if you let it sit for 3-5 minutes it will not start. The only way I have had it start after letting it sit for 5 minutes after it was previously running was to remove the air filter and drop a few drips of gas into the carb. My dealer replaced the carb on my saw, and I was hoping that solved the problem, but didn't... Any suggestions as to what may be causing this? Also when I come off full throttle after the cut, if I want to put the saw down and let it idle for a minute while I reposition a log for a cut, sometimes it will die. I put a new plug in, and I run Dolmar oil. Thanks in advance.