2003 Mercury 50 Hp 2 Stroke. This motor gets used and has never set up for more then a few weeks at a time and fuel stabilizer is used when it is going to set for more then a couple weeks. I will change in-line fuel filter and plugs this weekend but i have a feeling something worse has happened. Running full throttle (5800 rpm's) across the water Wednesday night and just all a sudden boat bogged down and now will not reach over 3000 rpm's while under load. In natural it will still rev up like normal,motor now has a skip while at idle but will run from idle to 3000 rpm's like normal then just act under powered and stay at this speed. Wondering if this motor has a low and high speed stator and the high side burnt out causing this issue's? Also need to know how to check compression on the 3 cylinders to see if i have dropped one? Any advice can be used now before i bust into it or take it to some one and spend a fortune. I have already done a good bit of searching on some boating forums (useless) and i want to say we still have the best group of folks on the web when it comes to help, replies and just good ole fun.