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Uhm... the story seems a little strange... I live in Italy, if you don't pay the road tax you can't circulate, but if you accept to pay all past taxes (plus a fine), you can use the bike again...
No timing hole in the case or timing marks on the flywheel because Loops are timed at the front of the engine. The rear half of the belt pulley should have at least a TDC mark on it, Ambassador (outer pulley half marked "10") and Eldorado (outer pulley half marked "5") had four marks (TDC, 1200 rpm, 2200 rpm and 3600 rpm). This aligns with an arrow cast into the timing cover. The rear half of the pulley can go on any of three positions - correct and 120 degrees off either direction. Bring the left cylinder (as you sit astride the bike) up to TDC and align the TDC mark on the pulley with the arrow. Easy for it to get moved around when you tension the belt, so I use a cut off bolt as an aligning stud to keep it in position.
I filed notches in the pulley per Guzziology and painted them with white out for the strobe light.