Its very possible to assemble the pin-drive vented Opti, by putting the pin in the wrong hole. In theory.... it can't be done. In practice, it happens all the time.
Always dangerous to put it in the wrong hole.....
What do you mean when you say it "started but wouldn't take any fuel"? You mean that it managed to idle, but if you attempted to open the throttle it would not increase the RPM?
The fact that it actually started would seem to indicate its not that far off. If you think about it, aligning the dowel pin incorrectly would result in a 120-degree error relative to the cam, or a 240-degree error relative to the crank. Hard to understand how it would run. Are you sure you have all the plug wires in the correct terminals?
94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400+GearVendors OD/4.11's / Strange 12-bolt / 300-shot N2O / Spohn Suspension / 6-pt roll bar with integrated SFC's / full AutoMeter instrumentation / MoTeC M48 Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.