Those grates come off. There is a little like tack weld there in a few
places. Determine where you want the drive, take your fingers and in
the middle of the grate, start working it back and forth, it will come
off. No need for a hammer, you may try getting a screw driver and
popping it off by the weld, or metal that is holding the grate..
It is sorta funny, but not hilarious
Dont be paranoid it will come off.