Now that I've got the mouse hotel out of my backseat, I'm getting the rest of the crud out of the interior. That includes the seam sealer which is past the end of its useful life. I'm planning to apply POR to the floor pan. Should I do the POR first, then the seam sealer or the other way around? Also, I have a replacement set of body plugs. I would think these should go on after the POR dries, but I wasn't sure if the POR will create a fitment issue with the plugs.