[AKnowles]

I personally don't know, but will be paying attention to the thread as I have considered doing the same for my Boxster. I have one bank at 0 and the other at -6 (deviation). So expect somewhere along the way I'll need to tear down at least one bank. I do plan to do the work myself, however.

Do you plan to repalce your actuators and selinoids while you are in there? The actuator seems like a pretty expensive part, but from what I read, if you open the top (so to speak) it's best to replace it then rather than have to disassemble it again later and do it.