From factory service manual:
With #1 cylinder at TDC firing position (both rocker arms loose as you said), verify that straight line on vibration damper is lined up with "0" degrees on timing indicator. Sounds like you have done this.
For oil pump driveshaft, coat shaft and drive gear with oil and install drive gear so slot is parallel with center line of crankshaft. Not sure if you did this.
Hold distributor with vacuum can pointed toward center of engine, turn rotor so it points forward and to approx location of #1 terminal on distributor cap. Place distributor gasket in place, install distributor and engage oil drive shaft. Rotate distributor clockwise until points just start seperating. Tighten distributor clamp.