Well, I got the tank cover removed and managed to do it without spilling gasoline everywhere.
I ended up having to remove a pair of additional allen bolts from the left and right hand side of the tank. Then the tank just lifts up pretty easily. The pains in the ass, though, were the 2 bolts on the underside
of the tank that needed to be removed to actually remove the cover. I used a towel to help prop the tank up a bit so I could get under it with a socket wrench.
I took a couple pictures in case anyone else needs to do this - these might be helpful:
Here you can see the two holes on the top of the tank where the cover bolts on to:
...the side of the tank with the bottom hole where the allen bolt connects it to the frame and the top hole where the tanks' side cover screws into:
...and the underside of the tank cover, where you can see the two mounting points where it bolts to the underside of the tank:
Okay, that killed enough time. Wax should be dry now - time to go polish her up and bolt her back together.