There is a way to bleed air off when filling tilt and trim by manually lifting motor up and down. Does anyone know this procedure? I used it years ago on an Evinrude but can't remember if you put the fluid in with the motor up and then let it down or is the motor down and then lift it up and let it back down. I have a 96 Johnson 150 Ocean Runner and it is jerking and bouncing up and down when I lower the motor. Any suggestions? Thanks.