I just tried bleeding my steering for the first time (conversion to hydraulic from cable) I seem to have all the air out but the helm goes firm then loose every turn. With no oil it turns freely and the cylinder moves freely. As you turn the wheel the cylinder moves when the wheel goes firm and pauses when it goes loose. The helm is a Seastar 1, the cylinder is a Wagoner comercial unit (rebuilt). BTW what is so special about Seastar oil $36.00 per liter.