Fuel pump rebuild might be next as it might not be able to keep up under full throttle. A two stroke can burn a hole in a piston if you run it lean over time and a $30 or so rebuild kit every few years is not a bad idea. My 2004 150efi(taho q3 f/s) that I sold I rebuilt the water & fuel pump every two years as the fuel we get here is not the best to say the least and my newest 2013 tracker 175 tf has a new fuel pump on it and water pump was rebuilt before I bought it.(have papers)