Electra cam timing marks

I'm reassembling my electra and need some advice on the timing marks. I have 2 punchmarks on both the inlet and exhaust cam which line up with the 2 sets of double punch marks on the idler gear. When they line up there is a single punchmark on the idler gear at the 6 o'clock position which should line up with something on the pinion gear.There are no marks on the pinion gear and I was wondering does the single punch mark on the idler line up with the location of the woodruf key on the pinion gear. When I do this the rods are at top dead center and the camshafts lobes are pointed horizontal, which would mean both valves are closed at TDC as they should be. I can post phots if the above isn't clear.

Ian