glow plug resistance was measured with a standard multi purpose voltage indicator, set to 200 ohms, with one end at the plugs (or at the terminals above the left front wheel well) and the other end on a common, the crankcase cover for example.

no idea about the valve adjustment, but i can try to find out.

no custom plumbing for the biodiesel (yet). what do you recommend, what kind of fuel lines, filters?