Hello everyone. New member here. I have a 600B that has a non functional instrument panel. Before I rewire it, I took the panel off and checked the gauges. Most don't look good. The tach and the speedometer cables are broken. The speedometer gauge needle is broken (flops around doesn't look like it is attached to the center pin). The tach needle will move if I spin the brass fitting by hand in direction of indicator. I have not tested the electric gauges yet. Is there an easy way to do that with a multimeter? Also Is there a less expensive fuel level sending unit available? Does anyone know of someone who rebuilds these panels? Or sells the gauges? It has the brown gauge faces.Thanks for any help !