Recently noticed that there is a small airgap between the glass and rear plastic spoiler. Not at mounting points but along length of part. Should be a seal/gasket so that water can't sit in that space? Should be wide enough to let water drain?
Just noticed the following great post: "How to replace your Gen 3 spoiler, step-by-step with pictures" Probly find my answer there. Yeah, it's my first day. I don't get out much.