I've been working on a D1005 in a B2320 tractor. It was very hard starting but once it warmed up it ran smooth. I had the valves machined and resurfaced the head. The issue is there are no timing marks anywhere! My timing method is to put a straight piece of welding rod into the glow plug hole. On the intake stroke while you rotate the engine hold onto the welding rod until it reaches TDC and adjust your valves (.006-.007) intake and exhaust. Most of the diesel kits cost from $50 to $500. The adapter is really the main issue since the glow plugs are 8mm x 1.0 thread. All of the kits came with a 10mm adapter but no 8mm and without the schrader valve your gauge will not accumulate pressure. I have several snap-on adapters with the schrader valve so I decided to turn one down. I also welded up an injector so I could get a tight seal. Now I can diagnose one of these engines in minutes and know exactly what I'm working with.