Getting confused

I understand what you're saying. I really can't see the push rod on my car coming out. I'll try to make it come out, and see if it will (when the car isn't moving). The other thing is... it seems that most aftermarket master cylinders do not have a groove/recess in them for the retainer to pop in to. I know the Willwood I have doesn't, and the push rod is held in only by friction between the rubber ring and the I.D. of the piston.