Installed a new air-conditioner yesterday. After everything was just about
assembled, one of the small, plastic, protruding connecting pieces broke
off the front filter panel. It broke off while forcing the panel into
place. Tried gluing it back. Just broke off again. The small plastic
piece acts a hinge. There is one on each side. It's important for it acts
as a pivot point for opening and closing the front filter panel.

I could go back to Sears and deal with replacing and whole unit or getting a
new part. That would be a hassle for such a small problem. Thought of
drilling out where the plastic piece was set and putting in a grommet.
Unfortunately, I don't have such a tool and I would imagine the surrounding
plastic might crack with the pressure of such a tool.

The plastic piece is tubular shaped and only 1/8" or so. Any ideas of how
to fix the problem without having to go back to Sears?