OP, I'm in the auto sales industry locally for a Honda/Acura dealer. I've got a friend and 2 former coworkers at BMW Northwest in Fife. I've found their sales department to be the easiest to work with thus far. Seattle is my destination for service.
If you're not already in contact with a dealer, PM me and I'll give you my friend's contact info at Northwest.
2011 M3 Coupe - DCT - Lemans/Black
VRTuned ECU Flash / Agency Power Catless Resonated Midpipe and Rear Section / H&R Race / Volk Racing G2