I have 1999 merc 115hp that runs strong. not much difficulty starting, could be better. I had lost one of my ignition keys. I thought I'd just buy another ignition. then I got to thinking, my ignition switch does not have a push to choke. I then thought that might be my problem on cold starts. i havent checked to see if my enricher is functioning, but i know i dont have a push to choke ignition. should I get one and if so how many position switch? 3?