I have a 2013 Yamaha F90LA with 117 hours on it. Starts easily, idles great, and for the most part runs good. Noticed lately that occasionally (and not all the time) that it wants to slightly bog down while accelerating. When it does this, I ease off just a little and it smooths out. I’m wondering if it’s a fuel filter or power pack problem. I just purchased the boat last fall and it ran great on the test run. I have drained the gas and refilled with ethanol free gas. Any guidance or help would be appreciated.