Ricardo, when you say "didn't start right up," did you just get a click? Like I'm used to hearing when contacts go bad...
Reason I ask is once every 50-80 starts my 100 will just crank and crank, and not catch. After a few seconds I just try again and it starts right up. But it's the opposite of my experience with starter contacts, seems more like an ignition deal. Just curious if you have ever experienced that, and/of if this fixed it.