I could use a little insight as to what is going on. At idle to 3/4 throttle everything seems fine. boat will come up on pad and run fine out to about 45mph (gps). Once I put my foot into it and try to go WOT the motor starts missing and top end is around 53mph. To me it seems as though one cylinder isn't firing. After I got home i pulled all the plugs and found no evidence of any fouling. In the bottom half of the motor cover I found the bottom coated with a fuel and oil mix.