how to wire the pneumatic diagram

We are team 1946.
I had a quick question about exactly how to wire the pneumatic diagram for using 2 cylender and the vacuum suck . we run into problems with losing air pressure in our system from the hole in the top of the little red piece on the suction cup end. all the air leaking was through the hole down to 30 psi , We are not good with it ? Thanks for the help.