Oops, forgot something - those 2 wires are meaningless. They are the EGR solenoid 12V output and ...uhhh .... I don't remember what the other one is. They output 12V based on the thermo switch. Just insulate them.
A.) Try removing and plugging the vacuum advance. Make sure your brake booster vacuum line does not leak. B.) Take the 2-6 plugs out, ground plug #1, crank the engine and check the timing. C.) Hotter ignition helps, yes. My Webers would not start on the stock igntion, but would start with a Jacobs aftermarket unit. Just finished Weber install, definitely not sorted out yet, but it DOES start and run, Mark