Let's try this.. I stopped by a local restaurant and got a plastic jar that salad dressing came in. I cut it off at the right height ( short enough to fit in my homemade cheese press), and drilled small holes around the bottom side. I have a wooden follower that fits into the cylinder. the screw of my press pushes on this. The follower fits the inside of the cylinder very closely.
I put all the pressure I can on there with a hand screw. As long as curd doesn't blow out the top, you're OK. I envy your machine. Wish I was the owner of a Dick sausage stuffer.