Any updates? Did checking for loose hoses or loose connectors help anything? Anything seemingly amiss in the engine bay? And as far as mechanics go - Just because they have a rotary doesn't mean they know what they are doing, let's be honest. I trust two people to work on my cars in the world, maybe 3 when I can throw enough money at Ray. I've done quite a bit of the homework myself and gone so far as helped changed the radiator and done other work on the vehicle. Usually going with a mechanic who's treated you right in the past is the best -A real mechanic (As Loki says "worth his salt") Is going to be willing to learn how to work on the vehicle to make sure he keeps his customers happy, regardless of the vehicle. Best of luck! Keep us informed.