Recently installed four Bilstein Sports on my C230. On the first one, was installing the top bolt with a socket, and after a couple of turns near the end, noticed that the shock piston had rotated from its original location. Because I was using a socket and not an open ended wrench, I don't know how much the piston rod turned. The instructions say not to let the piston rod turn, but doesn't explain why. Does anyone know?

The main reason I ask is that going over speed bumps there's noise from the front end that wasn't there before I installed the shocks, especially a loud thump from the right front wheel during rebound (coming down off the bump).

I'm going to check the front suspension again tomorrow, but I was curious if anyone knew whether the shock install could have had something to do with it.

Thanks!
Anthony