Well, I, for one, had NO problem replacing my rear hatch bumpers. If you are careful, pull the big rubber gasket out of the way, get the RIGHT (correct) size and shape "phillips-head" screwdriver, and take your time - it was easy for me.
You need to push inward very hard at the same time you start to twist the screw. Removing the rubber gasket gives you a straight shot at the screw head (required).
They work quite well, too.
The other fixes I tried were only temporary and unsatisfactory.