I cannot get the slot for the dist. at vertical as shown in the manual. Crankshaft is at TDC, Cams are properly set up. The slot for the dist. drive is oriented either slightly CCW or slighty CW when I reorient the pump drive. Will these positions work OK? I am not seeing how it would make a difference if the dist. is timed properly. I think I am second guessing myself quite a bit, not having worked on the engine in decades.