Is it just me or do all the new "clean emission" trimmers down on power? I have a 4 year old Redmax 2600 that used to throw 12 inches of string without a hiccup. Last year we purchased 2 new Redmax 2601's and if the string gets past the guard length it starts shaking and falls on it's face. Today one of the 2601 finally let go after having the wristpin knock for the past few weeks, and I cranked up an old Echo 260 and was amazed with the power it had. Are all the new "clean" trimmers having to be leaned out so much they aren't making the power they used to?