As said, you could make a pointer & a new white paint mark across the dampener on the other side or even underneath confirmed with the cheap TDC tool or likely the OE TDC mark is accurate for a reference (your call there) if you can see in there to check it with that OE tab. Use your dialback or make (3) or (4) new paint marks across the dampener CW from your new TDC mark. 0.0632683" is (1) degree & say (10) (15) (35) what works for you oughta be plenty in addition to the TDC mark. 2&1/4 (2.246") is 35.5 degrees.