340 Static Compression Numbers and Test Procedure

OK, then personally at this point I would go for one of the dampers with the screw on weights.

Like this, which also has a set of degree marks to make life easier for ignition timing:
http://professional-products.com/ha...7-25-318-340-360-chrysler-all-harmonic-damper

Once things are sorted out, you can opt for something better.