Hi all. Another newcommer to the M5 world. My first modification is the suspension. Wondering what the best spring/shock combo is. Checked the archive and seems to be Koni/H&R. Currently I have Bilstein/H&R but have been bottoming out over bumps 40+mph. Shocks do not seem worn, any suggestions? Also, what will be the result of having Konis up front and Bilsteins in the rear?