I didn't know about the Wet sanding, but that alone could be worth it's weight in gold. Could you PM with your Individual contact person. I have a few more questions...
03 M5/ 02 540/ 01 M5/ 00 X5 4.4/ 99 M3/ 95 M3
"If you do what you've always done, you'll get what you've always gotten." Tony Robbins