Been noticing an annoying squeaking noise coming from the rear of the car. It only happens with the top down while going over bumpy roads, and is more prominent on the passenger side. My hubby seems to think it's the 2 little springs on each side of the top that sit just under the trunk lid right near the 'humps'. He is tempted to spray some WD-40 on them to see if it helps with the squeaking. Does anybody else have this squeaking noise...and if so, is it advisable to use WD-40 on those springs?