pkf: There is supposed to be some adjustability of the hinges, but it SOUNDS (from previos descriptions) like almost more trouble than it's worth. On e way to test, and you have done this already because you said that you know where it's coming from, is to put a piece paper, half-in and half-out of the trunk (=boot) and then close the lid: a GOOD seal will 'grab' the paper, and a loose/bad seal wiill allow the paper to be pulled out. If it were me (and it's not :I have an estate/wagon), I would either look for a similar seal from a junkyard/wrecker/pick-n-pull, and install the 'new' one on your car; OR, buy a new one ($$$); OR, go to a hardwars store and look for different types of closed-cell foam insulation strips, or the type called 'backer rod' that looks like a 6-meter long grey worm, and add some to your present "boot's" rubber seal. That stuff is like $2 US, and is great for a lot of stuff beyond the usuaul recommended uses: it compresses, it fills gaps (it's great if you're caulking around windows/doors in a house, and there's a big gap around the frame), etc. Good Luck, please let us know how you chose to solve this problem. By The Way, underneath the wheel-wells, one on each side, if you're layind down on the ground looking UP, you will see a little tube or hose hanging down: there is often debris stuck in the opening, or they are caked closed with mud, etc.: be sure to poke a straw or something into that opening (it's only +/- 4 or 5MM) and clean it out: sand, candy, pencils, etc., get caught in there. If it is completely clogged, you will see moisture or water, and/or smell mildew in your wheelwells.--PD.