No plz all input is welcome. Just explaining my intention a little better. I was not aware of the reliability of the old check valves. This is my first Chrysler. Mostly only dealt with old Mercs with check valves in the past, and those all came out relatively easy. When restoring, I go down to the last bolt, inspect, and replace if needed. Figured Id pop these out to check the undersides is all. If its not feasable, as it seems not to be and confirmed by you, then I can just move on to the next thing. Thank you