I was stranded at PAO after discovering that an alternator bolt sheared off in flight. It was getting dark, and I had neither the parts nor the tools to fix the custom setup in my experimental. I happened to walk into West Valley Aircraft Services (the only shop open late), where Kevin and Carrie dropped what they were doing to help me. While they could have done a quick fix, at my request they kindly worked late into the night to help me not only fix it right, but improve upon the previous installation. I was so happy to be able to avoid fixing it a second time and to have a better aircraft than before the problem. They are very pleasant to work with, more than fair and “piston-single-friendly”.