A lucky man indeed.
Yeah, here an the LF forum that Ralph mentions would be the best places. I also have a Tech V. Marflex doesn't have a website, but they have a phone. They can cam new lenses, still service the Tech V, and can be a source for parts. Always call before sending them equipment, because not all lenses can be cammed, and if they need to wait for a part from Germany, it can take months (I've had a pair of fresnel clips on order for I don't remember how long now--meanwhile I've figured out how to make the fresnel work with the regular GG flange, but it's a bit precarious). They aren't cheap, but they have factory equipment and specs and lots of experience, and will get things right without question.
Feel free to post any questions in this thread, and I and others should be able to get you started.