ksagis

Has anybody considered drilling a couple of small drain holes in the bottom of the spoiler (but outside the gasket line) such that if water gets in, it can drain out? It seems to me providing a mechanism to drain is better than trying to prevent it since the silicone might break down at some point.

As Bummer points out, there are a couple of hole that remain in the bottom (I called Spoiler Solutions about them and then said to leave them open). So the possibility remains that if water gets in between the spoiler and trunk lid that it could wick into the spoiler by capillary action or through holes.

@Bummer: when you ran bead of silicone around foam, did you go all the way around the inside of the foam or leave any small gap for drainage?

@Zrider79: it sounds like you did notice the water in spoiler like me, is that correct? Do you know how they got the water out before reinstalling it? I suspect they might have drilled a small hole to get it out.