Bob Boulton was asking if there was an easier way to split Simplex
pneumatics to get to the pouch.

My methods vary according to the way they are seeming to break apart.
But if you have a good, cold freezer, try a dozen overnight after you
have removed the cloth and sanded down the sides.  Then find a great big
screwdriver that fills the rear supply slot and twist.  The unit valve
should split right down the glue joint.  If that seems to work on that
particular player, do the rest of them that way.

Craig Brougher