Yes. I haven't fixed it, but I need to. I'm at a remote location and have no access to my spare cartridges, or shipping to get additional supplies. (I do have some basics (spare diabetic syringes, filters, BAC water).
I'm thinking I'm going to dribble a bit of BAC water down the underside of the cart, and then inject some air thru the top to move the stopper down a bit. Then try the cart again.
Alternative is either wait 2 months till repat, or suck contents of cart into diabetic syringes, and go back to the old school injections.
I don't like either option.