After looking at some other diagrams and notes, I agree with CTaylor that the 12v supply to pin 30 is un-fused. You have indicated that power is not present at pin 30 in the "off" and "run" key positions; is power present at pin 30 when you operate the safety switch? Is power present at pin 87 when you operate the safety switch? Will the safety switch operate the fuel pump with the relay removed?

Turning to other items, can you confirm ignition timing? Are valve clearances too tight? I daresay that you know this, however tight valves and retarded spark will make it very, very difficult to sort out any fuel system problems.