Could use a little professional guidance. 1990 40hp Force. Fuel pump diaphragm was ripped, installed a new one. Now, I'm having trouble cranking the motor. Will not start with the throttle in the "start" position, it begins to fire only after advancing the throttle. Heaven forbid I push the choke in, guaranteed won't start. Haven't checked the timing, but appears to have good spark to the cylinders. Carb recently cleaned, needle valve seat & float adjustment look good. At this point, I'm running out of ideas or can't see the forest for the trees. Any suggestions would be much appreciated. Thanks-