I am currently having the INGS+1 kit installed on my 05 Coupe. This includes front, side and rear underspoiler/sidesils, Fenders and rear trunk spoiler. I have three questions.

1) Does anyone know if the front and rear underspoilers are supposed to have a piece of weather stripping between the urethane and the spoiler. The people installing say it appears that this piece is missing from my order. They cannot continue unless they find the right piece. It took four months to get these parts so going through Bulletproof is out of the question. This should not be confused with the doublesided tape.
2) I am being told by the installer that the fiberglass fenders are really thin and will probably break the first time someone taps my front bumper! Huh? Could this be true?
3) Am I paying too much? Has anyone done this full kit install and could I get an idea of what I should have paid for the painting and install?