I know the damage has been done... but I waited and waited and no one mentioned putting an offset key in the crankshaft throws the timing marks off on the balancer. Add in another offset camshaft sprocket key and no telling where the timing will come out if you don't find the engine's true TDC with a degree wheel and dial inda(or pos. stop)...
Could be where the damage came from if that was overlooked.

I feel better..