Motor is a 2012 90 four stroke, serial #1b926235 with roughly 8 hours on it. It dies out within the first 30 seconds anything over 4000rpm, sputters, kinda clears up, then comes back intermittently. I thought I fixed it by tightening some fuel lines and changing out the fuel filters. Haven’t pulled the spark plugs yet. I’ve read about possibly being a float switch issue in the FSM; called 2 local Merc dealers about the float switch and they seemed to think the float switches aren’t an issue, internet searches say otherwise