The problem is that I didn't mark it before disassembly.
Additionally, because the cam sprocket must be pressed on, there is no way to reassemble the motor/top end to determine the proper alignment by "mocking it up".
Re-assembly order is: Press cam sprocket on crankshaft, assemble lower case, assemble top end, orient cam shaft to bottom end at TDC. thus my quandry; must know bottom cam sprocket to crankshaft alignment first.
I wish I could have found an entire replacement crankshaft but no joy.
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