This helped me, from Axel Breaker Earl:
The best way to set the timing belt up right, is to remove the lower timing cover and align the notch in the crank gear to the mark on the oil pump.........I don't try to use the harmonic balancer with the lower timing cover in place to set the timing belt. I only use the HB mark(s) to set the ignition timing.
Here is a sheet that shows which mark is the TDC mark on the HB.
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