good day to all of ya. I need some help with a 95 tigershark 900. I got it this summer after it had sat for two or more years. I replaced oil, gas, oil/fuel filters, new plugs, battery. I started it with flush kit about two months ago. Starts great, idles great. In water...it bogs out. it will go great for a little while (10 seconds) then will either stall out or i have to let off the throttle so it will idle. This is right after I put new plugs in. not sure if its from old fuel, or plugs going out quickly. today was the 3rd time i had it on the water. i've gone through alot of plugs. nothing changes. any suggestions. thank you for your time.