Roll over shut off valve

From the below picture, where is the roll over shut off valve? I am asking because I suspect my roll over shut off valve is leaking as I smell gasoline vapor only under the condition of (Turn a corner very hard after filling the tank up all the way up, will not have issue if I fill it half way)

I was told that in order to remove the roll over shut off valve I will need to remove the entire convertible top assembly to get to the valve. My 02 spider came with a access panel under the convertible top storage area, which allows access to the top of the fuel tank to the fuel pump and level sending unit. (See picture) I was under the impression the roll over shut off valve is located somewhere else, but from looking at this picture posted by Universal Motorsports, there is no other valve else where. So where is that valve?
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Well, I may be wrong with my wording. I am aware of the electronic inertia shut off valve by the footwell area.

Here is a better description of it
"The orange vapor/roll-over valves on the top of the fuels tanks have a gasket/grommet at the bottom where they fit into the tank. Since the tanks are silver, it is easy to see evidence of fuel seepage. You will need to remove the side panels to gain access to this area.
The orange valves are the updated parts and there is an updated gasket that is green.
P/N for this is 195049. Make sure you have the colorful upgrades on your car. ;-)"

Here is a link that talk about this some more, I believe this is a common issue on the 360, just more difficult to repair with a spider. http://ferrarichat.com/forum/showthread.php?t=228860&highlight=convertible+top

 

Thanks Brian, that's what I was afraid of. So looks like it is a top out job for me. Well, the bright side is at least my cherry picker will finally come in good use.