I had ordered the distributor with the built in coil with the engine build. I came to install the heater matrix feed from the inlet manifold and found that the pipe fouled some cables exiting from the distributor. As a result I needed to rotate the cap 90 deg C to move them well away from the hot pipe! As a result I had to reset the timing and adjust the plug leads accordingly. Cylinder 1 should fire a TDC so I rotated the engine until it indicated TDC and then rotated the distributor until the rotor arm was directly inline with one of the plugs. I then relabelled that point 1 and adjusted the leads accordingly.
You can see the cables from the distributor in the photo below.