FYI, the post you quoted is over 3 years old.That’s really cool! Keith Wills sounds like a gem of a guy—it's rare to find someone with that level of expertise and willingness to help out. It must be awesome having someone like him you can rely on, especially for those vintage machines. There’s nothing better than getting them back in working order after a repair! Having someone who knows the ins and outs of these detectors can make all the difference. Glad he was able to help you out again!