My 05 sportster lost thrust when running about 55mph. No warning lights or beeps came from the instrumentation panel. The engine still runs fine at idle but do notice a loud noise like soething is broken. The boat was able to drive back to the ramp. I don't see anything in the prop/pump. The boat has 29hrs and all service done at the local seadoo dealer. Is this the dreaded supercharger problem??? PLEASE HELP! How much would it cost to have it rebuilt???