Moto Meccanica is gone, but Jason (former co-owner) opened up The Motorcycle Shop in the same place with the same phone # 707.578.6686 Not 100% sure, but I think he still has the dyno. Jason is a Ducati guy, if I needed a Dyno tune on a Duc I'd call him first.
Damon and crew at Mammoth seem more japanese manufacturer oriented. I let them run my dirt bike on their dyno when they first got it, but only a base run - no tuning.
Swing by a
Santa Rosa Bike Night and ask around.