Question for anyone who has installed the EGR Cab Spoiler. How well does its' shape fit the cab? I got mine in, but it doesn't seem to really fit perfectly. Looks like I would have to hold it down on the cab for the entire time it takes for the adhesive to dry. I highly doubt tape will hold it down as much as it needs to be held down while it dries. Also, is it supposed to seal all around the third brake light, and/or is a gap supposed to be there for water to drain off the roof?