I bought a used Echo PB610 backpack blower, non-commercial use. this thing is a "piece of shi%" seriously... I have never like Echo products, and now i know why! It bogs down at full-thottle, very weak when it does run at full-throttle.. supposed to be a 58.2 cc Power Boost Tornado engine "yeah right" tornado engine. ___________ Can anyone tell me how to get this piece of junk running like a 58.2 cc engine would run on any other blower?