Hi Folks! I'm new to the forum and I'm looking for help / advice. I just purchased a used (less than 50 hrs) 2018 VX Ltd Waverunner ... runs rough, unable to get RMPs over 5000 on the water (but engine runs fine on lift with hose water cooling). Took to Yamaha dealer service department ... they thought plugs were bad, gas was bad ... changed both but problem persisted. Service guys then reviewed electronic records and discovered that more than a year ago Yamaha declined warranty engine replacement for former owner; claimed engine was ruined because former owner over-filled oil. Dealer estimates cost of total engine replacement around $7,000 (seems like a lot). Can oil over-fill permanently ruin engine? Is there a less expensive repair option? I'm in the Tampa area ... are there qualified non-factory repair folks that can rebuild or replace the engine? Any ideas what to do next? Any / all suggestions appreciated. Thanks!