Sounds like your oil pump is misaligned! I have a photo somewhere of the correct alignment of the pump shaft if you look down where the dizzy is when removed.
If its aligned correctly at TDC the rotor should point to 1.
remember that the rotor will only do one revolution for every 2 turns of the crank, so with the rotor pointing at cyl2 on tdc it may well be correctly timed up.
simple way to do things.
1st step, turn crank to find tdc marks at rear under timing hole at flywheel. if the rotor lines up with cyl1 spark lead then move on, if it's at No.2 then do another turn to get at No.1
2nd step, remove cam housing covers (the bit that says alfa romeo on with 4 bolts, as col says) and check the cams are set correctly. there will be a line marked in the rear journal which should align with a notch in the cam housing .
you can also use the timing marks on the pulleys.
belt tension should also be checked, as has been suggested.
these 2 simple steps will set the cam & ignition to enable start up. fine tuning of the ignition timing can be done when it fires.
as a double check you can do to be sure you're on the right path with both cams, when you have the engine set to tdc and firing on No.1 then look at the cam lobes on No.2. they should be "on the rock", that is one just opening and one closing.