I was cleaning my 3pt control valve because it was sticking and I lost two little parts. I had it on the bench and I was trying to flush the plunger. It came apart and I found the ball bearing and the spring on the floor the little piston with the o ring was in my hand clamped to a vice grips and the plunger body in my other hand. I looked all over and can't find any more parts. What else goes inside the plunger?