My burner bowls are in rough shape. Lucky for me, all it takes to change them is a gentle tug, removal of the old, replacement to a new bowl and reinsertion of each burner.
After pulling the old crusty bowl out, the new bowl is placed back in the same spot with the hole in front of the burner socket. Then, gently press burner contacts into place.
Press ends of burners into the end holders so the burner lays flat and firm.