Here is what I did, and it took all of 5 minutes.
I removed the front of the seatbase (4 screws) and took my die grinder,
with a small cutting bit, and cut the stupid piece that goes under the
vent, off.
BANG !!!
Off comes the cover!!
What a stupid idea the guy had that designed that gizmo.
Now I can remove the cover at will.
No more being a contortionist, or swearing.
A Dremel tool will work if you don't have any air, or a Die grinder.