Does anyone own a Poulan chainsaw? I have model #3314 sold by Sears. It is about 2-years-old with a couple of hours of use on it. I can't use it because the fuel cap sticks on the tank. I talked to Poulan customer service and was told this was because of unleaded fuel. I have replaced the cap three times. Any suggestions on the curing this problem? By the way, Sears stills sells this saw.