Thought I had it working . But as it looks after an extended drive shortly after I stop the brake pedal gets hard. Which means the compensating port is not uncovered at that point . When I adjust the m. Cylinder rod out further then pedal releases and can be pushed to the floor with no force. Can be pumped up but only lasts seconds. Can I be adjusting the rod out to far? It all works fine when the shaft is adjusted shorter on short drives cause it does not have time to build heat pressure. Any ideas ? Thanks