Originally Posted by JRWooden
If the hex is just rounded off I'll bet you can buy a new bleeder screw,
put a pair of vice-grip pliers (or maybe a 6-point socket could be pounded on)
on the old bleeder and get it out of there.
Install the new one and life might get good?
I ordered speedbleeders but have yet to install them. just a thought if the OP does replace them.