I have a 17 cc with a 75 HP Honda four stroke. A few times last year, I had an issue with the acceleration of the engine. This issue has happened a couple of times recently as well, but a little more often. The issue is that I will push the throttle to full speed, and for some reason, I will only go to about 66% of full power. This might happen a couple of times during the beginning of a trip and then go away. Anyone have an idea of what the problem could be (assuming I gave enough information)? Thanks.