Rubber feet for T480

Hi guys! I’ve seen something similar posted a while back on R***t but figured I’d ask here as well

How do you replace the rubber feet on a T480? There are plenty of sellers that sell what they claim to be feet for the T480 for cheap, but they don’t have the depression on their back sides for the plastic protusion on the bottom case to fit into. I know that the “proper” way of replacing the feet is a bottom case replacement, but it seems a bit excessive.

Are there any sellers online that sell feet that fit? Is there a way to reliably create that indentation on non indented feet? Am I out of luck and will I have to replace the whole bottom case just for two rubber feet?