Update.
I'm done for a few days. I got a new balancer, rented the tool to install it, it all went well, pulleys were lining up, I was going to use the old balancer as a gauge to make the spacer, since the lip on the new one and old one are the same, and was putting it back together, when SNAP !! The Grade 8, 5 slashes on the bolt head, new, crank bolt SNAPPED. It's just below flush with the snout of the crank. I was just about done with the torque wrench, had it pretty damn snug, and was expecting to hear the "click" of the torque wrench any time, when everything went to hell.
I drained the compressor, put the tools away, and am going now to return the installer. It's time to walk away for a few days.

I guess the bright side is that I didn't Loctite the bolt, as I was originally going to do....