Originally Posted by onehundred80
I think that 2mm (.080") away is way too much, I think that it is more likely in the region of .2mm (.008" if that), if your flywheel moved 2mm up and down you would here a rumbling noise because the engine would be ruined.
As I said earlier a burr would wipe out the sensor.
Edit
If the flywheel moved .2mm the engine (crankshaft) would be toast as well.
I can't fathom that pinning the flywheel with a scewdriver would make the flywheel flex enough to cause this.