There is a small indie specialty Porsche shop in Bellevue called Squire's Autowerke owned by a great guy named Jason. He does very good work at reasonable (for Porsche service) rates. He is passionate about Porsches and operates with very high integrity. One caveat...he won't work on Porsche SUVs because he doesn't consider them "true" Porsches (and I tend to agree with him!)
