Uther, as JohnV6 says - into the lid and apply to the beading with a fine brush. It goes a very long way.
Today I've been fettling the spare wheel area. First I fitted some spare wheel retainers. I did this job to my Roadster earlier this year so I won't go into too much detail this time. The curved ash is from the factory scrap box.
Cut to size, measured and drilled.

Here it is fitted on one side, and you'll see I rounded off the edge as it was a bit too close to the tyre.


The amount of effort this took is obvious here!

But the result is worth the effort:
Here you can see that I've also added four neoprene triangles so that the tyre doesn't rest on the metal plate.

Next I added the 12v feed for my high level luggage brake lamp. It's easy to splice this into the original wiring to the existing lamp. This Cobra is not as neat as the 2005 version. Indeed you can see that the cable groove is not centered, being very slightly offset to the right.

Finally what should have been a doddle - fitting the luggage rack. The over-riders come off with the large visible domed nut and a hidden set-screw under the rubber grommet at the bottom of the unit.
When I fitted a rack to my Roadster way back, it was necessary to elongate the hole in each over-rider bracket because the small set-screw hole on the main bracket was out of line after fitting the rack bracket. So I was prepared for this. But it turned out that the new design of bracket is too tall to fit the rack brackets without some serious filing.
Here's how it comes:

And this is how it needs to be to fit the bracket:

So after a sweaty hour or so, it all went together OK.

While the over-riders were off, I also added some edging to the holes in the rear valance - visible in this photo:
Also visible is the set screw, and grommet.