CeeGee... I believe the only way is to cut them at the hinge line and
make new slots off to the side of the old ones.. You can carefully cut
out the old CA hinges with a hobby knife... But then you have to use
the thicker pinned hinges since the slot will be a little bigger or you
can go with Robart's.... Anyway that's how I was told to do mine and
it worked great...