Hi need help with my early 90s 60hp mercury outboard took it out on the weekend an left the boat ramp an it was running fine at about 1/4 throttle when i went to give it more 1/2 evern full throttle it just would go it just had no power ive put a new stator after the stator was done it sheared the key way got that fixed then i had the carbies done just before i took it out can someone pls help me