Hey Guys I have an Echo SRM-2100 trimmer and a Weedeater Brand P.O.S that I bought earlier this year as a backup. I noticed that my echo started to not get the tourqe it once got, and it seemed to kind of bog down. I also noticed that when it started to Bog down, it looks like air is being blown into the gas tank, the gas is kind of bubbling, like a kid blowing bubbles in milk. I had looked at the tank in the weedeater trimmer, and it did not have the bubble when it ran. The Echo trimmer is 7 years old. Today, I noticed the weedeater brand doing the same thing, bogging down with air bubbles in the tank. I have grown a little this year, and now have an employee one day a week, and I use the weedeater on that day, so it has around 50 lawns on it. Any ideas on whats going on?