I'm making an "R" rollbar for my "S" and I know I need to cut a channel in the engine cover for the rear brace of the roll bar to go through. What I'm confused about is that the pics on FFR's website of the R show a carbon fiber cover on the channel. But it's riveted in place. Is that really to say the engine cover on the R is not removable without drilling all the rivets out?? If you don't have that carbon fiber cover, how do does the engine cover get support, since the humps won't be attached to the side of the side sail. I guess just the hump block-off plates?