2007 2-stroke 90hp Question

My 2-stroke 90 hp will sputter and lose power at full throttle. This problem happens about every 10 or 15 times when I go for full throttle. Its most recent occurance happened when pulling a water skier, needless to say they were not happy as I slowly lost power and they submerged into the lake.

Any and all suggestions greatly appreciated. This motor has less than 100 hrs on it!

[boats.net]

An 2007 should still be under warranty. Check timming, fuel system for water, probably will have to test ignition and fuel system on the water at the time it is losing power in order to find problem.