my 200 speedster runs great but pulling out sometimes it vibrates at 3500 to 4000.but goes away above that.all bearings are new in pump,impeller is perfect, new shaft, the weirdest thing is when i'm runing hard and doing lot's of turns than stop ,I'll try to go again it vibrates than beeps and shows the oil light .the oil is clean seadoo oil and plenty of it.my thought is bad alignment? but the beep makes me think some sensor is shutting me down. I shut off that engine and start it back right away and it stops beeping,good to go.