the timing belt pics look good. When the green connectors are connected, it tell the ECU not to mess with the advance, so timing must be set / checked with them connected. If you ran out of slot to get to 20degrees, the disty gear is off a tooth. The alignment setting info applies to the rotor position once the distributor is in place. If you watch closely, the rotor turns some while inserting because of the helical gears used to drive it. Since it does run, it's probably only off 1 tooth. Just pull the distributor until the gear disengages, advance or retard it a tooth, [depending on which way you ruin out of slot] slide it back down. re check the timing.