New to the forum. Not sure if this is right place for the question. 1989 Bayliner 2302 with 2 x Force 125's. What kind of gas consumption am I looking at, say WOT, or at 2500 RPM, 3500 RPM, etc.? I hear they are gas hogs. Would I be better of changing them out to Yamahas or Mers, after purchase...