Just bought a used Echo PB610 backpack blower for $75 The guy wasnt in the business, he was a homeowner and has had it since new.. but had been having issues w/ "what i thought" was the Carburetor. But he had just put a new Carb on it, brand new from ZAMA. (still has limiter caps on H+ and L- jets) He also installed a new fuel filter, and spark plug. the old carb, filter, spark plug came w/ it. "so i know he's being truthful" But i went to use it for the 1st time, it starts up great, but it wont fully throttle w/out bogging down.. not die but right there at it! "before i start adjusting the factory settings on this new Zama, what do you guys think.." Anymore suggestions before going forward w/ this?