picked up a husky 235 with the toolless tensioner, and i'm bout ready ready to bring it back. first saw is a pia to start second when pushing the stop button it don't stop! and third how the hell does this tool less tensioner work???? i'm rolling down toward the + sign and the chain is not tightening someone help me out here i'm getting frustrated. i have a 455 rancher and have no probs with that