Hello everyone. I've got a few year old Poulan Pro push mower. It's got a Briggs and Stratton motor. At the end of last season, it started sounding like it was going to stall every 10 seconds or so. It would almost die, then roar back to life. The carb was the issue (I thought) as I noticed gas was mixed in with the oil. So much gas, in fact, that the spark plug was coated in it. I replaced the plug and replaced about 2 months ago. It was running great all summer long. Yesterday, I was cutting the grass and it started sounding like it was going to stall just like before! Any ideas? Thanks in advance!