72-125hp evinrude

[72evinrude]

After cleaning rotor I.D. brass ring 360 deg the idle went from 800 to 1600 rpm. If I adjust timing to max retard I can get 750/800. It starts and runs at this setting and is baffling the H out of me. Choke is off and throttle plates closed. carb floats stop priming presure. cannot find any vac. leaks. Rotor is proper part number. Does this engine have quick start? ( power pack?) Not sure I know what quick start is.

Thanks much in advance for any help,

Joe