Decided to go with the elliptical crossbars and have unpacked them. The instructions pointed to my user manual (which I have misplaced).

The nifty tool can easily rotate the plastic plugs, but they don't seem to pop out and I don't want to force them. I'm pretty sure they come out since it seems to be the place for the hex wrench to go. Any helpful hints from someone who has installed these things?

Thanks in advance.