Marco is a long time friend of mine and is certainly customer service oriented. I know things can get backed up pretty well at McKenna, but as long as you contact Gilbert or Marco directly I'm positive that you'll be thrilled with the service.
I purchase pretty much all of my parts for clients directly from McKenna, and also bought my M3 performance steering wheel, CF Splittlers, Rear Spoiler, and CF Mirror caps from them. I couldn't be happier.
Gilbert: Tell Chris to get back to me please on that A/V jack I ordered! That's what I get for going there in person instead of calling you!