Gotta build ANOTHER engine.

We did same thing with crank gear orientation. We had it timed correct cam at 12, crank at 12, tdc #1 compression. But when we rolled over by hand to set valves, there was piston to valve interference. It was on a stand and we bent 2 or 3 valves! I didnt reef on it, valves bent very easily.
Took a "discussion" on here to figure out crank gear had multiple slots for alignment. As mentioned above, rotate as you go.