Did you completely remove the fat Nav/Stereo harness that runs from front to back? I have mine pulled up fully intact from the rear to the driver floor area. From there I'm trying to figure out next steps, whether to remove the dash or whether it can be worked out without cutting.
2006 SG ZCP M3 6MT TCKline/Ground Control-SS Stepped-Crackpipe-Borla-4.10
2008 AW E90 335i 6MT Quaife-3.46-PSS10-Code3IC-RissDP-BBSCH-245/275 RE01R-JB3 2.0B