I got a 2004 Mercury 50 ELPTO and was wondering what I need to do to decarb this thing. I've never done it yet, and it's probably due. Any tips. One guy just told me to run it on the muffs in the yard and run a can of seafoam through the intake and let it clear out good then change the plugs. He said you wouldn't believe all the carbon that will come out. He also suggested putting a set of plugs in it too. Any suggetions?