Probably not much as the barrel of the bolt pass-thru is raised above the surface and the strip appears to be sitting flush with the top of the barrel. I assume the bolts pass from the interior into the Rack/rail/strip.
I think I might add a super small bead of silicone on top of the barrel before I installed the bolts. small amount couldn't, while a large bead might result in a semi-permanent bolt install.
I think I might add a super small bead of silicone on top of the barrel before I installed the bolts. small amount couldn't, while a large bead might result in a semi-permanent bolt install.