Just bought a new Redmax stick edger from a dealer via mail order. Every time when I try to start it, I feel a lot of resistance while pulling the rope. It appears the rope is released inch-by-inch as the piston moves up and down. I currently have other 2-cycle equipment from Kawasaki, Shindaiwa and Echo, none of them behaves like this Redmax. Is this some characteristics of the Strato-charged engine or the unit is defective? After its started, however, it works fine with lots of torque and the engine sounds normal. Would like to hear what others think before taking this to a local dealer. Thanks in advance.