Have to reinstall the cover in the bed that hides the fuel tank fill neck hole. (seals along the bed and the bed side) Supposed to be a gasket, not paying more for a gasket than I did the OEM metal piece! Also on the topper, right in the center where the two halves come together, there is supposed to be some sort of caulk-ish stuff to fill a decent sized hole. Anyone got any suggestions? I'd use silicone, but if I have to pull the fill cover again, it would be very hard to clean up. Besides, with the amount of silicone I'd need, it would probably cost as much as a tube of "good" stuff. Doesn't really need to be strong adhesive-wise, it's more just a sealer in both locations. Hoping something I can kind of peel off in large chunks if I have to. If it firms up quickly that's a plus, as the bedside piece has some slop built into it that I need to take into account.