Hi, Replaced the leaking reservoir on my 4 year old Fisher Minute Mount 2 hydraulic unit a couple of weeks ago. I lost about a 1 and 1/2 quarts of fluid in the process, and did find a small amount of sludge on the drain plug, which I cleaned. Filter and pickup tube looked good. Put it back together and topped off the fluid. I tried to purge the air by just running it up and down and side to side, holding at the end of the travel a few times. However, now the response to the joystick control is sluggish and jerky, where it used to be quick and tight before. I think there probably is still air in the system, but cannot find the procedure to purge it out. I have read Fishers flushing instructions, but it is too damn cold to do that whole process right now. Any advise would be appreciated.