So, I took my boat out this past Thursday to the Skyway Bridge fishing, ran great. Went later to the beach for a swim with the kids, ran great. Time to head to the dock, started making a rattling noise so i backed off the throttle and it went away. Tried to throttle up and same noise came back so I put in neutral. Back to forward and the motor just shut off. Wont even turn over now. The started engages but cant move the flywheel not an inch. Luckily i was close to the dock enough to just go with the wind and paddle for a bit. Got it out of the water. Put it forward and reverse and tried to turn at the propeller, Nothing! Put in neutral, nothing. Can't turn it in either direction. Motor has new head covers with gaskets, new water pump, lower gear oil looks good no water. New lower oil seals. No alarms ever came on, and both thermal sensors are brand new. What happened????