Looking like the proportional valve piston is stuck. Took it apart today and could not move the piston. In the picture it looked centered, but have found that the switch pin is supposed to sit in a divot. When looking down the switch hole, you can see the shaft of the piston, not the divot. Must have done this when bleeding using the pump and hold method. Also found out that a bleeder tool is to be placed into the switch hole to stop the piston moving during the bleeding process. New one on the way, will keep everyone updated on the 'saga'. Jim