For anyone dealing with steering issues, I recently replaced my Vetus steering pump. The new pump is the Vetus HTP3008R. My old steering cylinder seems good so I didn't replace it at this point. I had to bleed the lines and cylinder several times. The first time, any pressure on the rudder during a port tack would return to center. Mounting the emergency tiller made it easy to watch the movement. I found it was necessary to fill and bleed the lines with the cylinder in various positions before all the air was out. I couldn't be happier with the new pump. The install was a quick easy swap.
Best wishes, JK