F430 Spider - Removing Engine Bay Covers

I may be missing something obvious but once the rear two smaller covers are removed, is there a trick in removing the two larger covers? Once all the bolts are removed I'm struggling to manouver the covers fully off as they seem stuck between the engine support frame rail and convertible top cover panel, I can only raise the convertible top cover panel to free up space when the engine cover is closed so I'm stumped!

 

That's what I expected but the hood panel (in its closed position) restricts movement of the covers such they don't seem to be able to be manouvered out and it diesn't seem possible to partly open the hood / raise the panel with the engine cover open?

 

Thanks - as long as I'm not missing a procedure, I'll give it another go over the weekend.