Quote Originally Posted by mryoda View Post
Thinking about it,
i developed that roll in a Patterson System 4 and the grey inner ring crumbled
so we did open the bag to add another ring, i thought we still had it sealed as we
kept a tight line in the bag ?

Since then i have been using Patterson "Super" System 4, but the inner lid is sloppy
and doesn't feel locked sometimes.

I have had the red "ring" on one of my Patterson "Super" System tanks partially detach. That allowed the inner lid to release from the lock when I didn't want it to.

A small amount of glue re-attached the red ring, and solved the problem.