I changed the spark plugs and when I checked to see if the throttle opened all the way on WOT, found that it does not. I could get another 10 to 15 Degrees out of it by twisting the throttle plate. In looking further, there is a couple of things I could do to get it to open completely, then I started over thinking it and wondered if it would be a good idea to screw with the factory settings. The boat ('99 E21) will make 47MPH and 5700RPM. The arm on the throttle body plate has an elongated hole that if I dropped the pivot closer to the center might make it open all the way or readjust the throttle cable to allow it to completely open it up.
Any suggestions?