Sorry, didn't know that.... Oh, well, hope others will jump in and help out. Good luck getting your 355!!!!!!!
The reason I've heard is the various dealers/mechanics don't want the liability/aggravation if they missed something. I'd keep looking or maybe someone else will chime in for your area.
Not Seattle exactly, but considered the best F-wrench in the Puget Sound - call Carlo Durante at Alfa of Tacoma - 253-572-ALFA - he's the only guy I'd trust around here for a PPI, just IMO. Great guy - been working on Ferraris for over 40 years. Good luck, Jedi