Model Garage is just the best in the world, they are the Einstein of mechanics! I am exiled in Palo Alto (Berkeley was my home for 15 years) and when my car broke down and no mechanics in Palo Alto can solve it and after $$$$ in useless repair bills, I finally called my friend Don and he diagnosed the problem (over the phone!) and told me which part to buy and how to replace it-...following his directions to the letter, the car was back to normal and operated without any problems for many years! Don is also a genius in math (and physics) which I will talk about later, perhaps at the 30 year anniversary party...sygobears in Palo Alto