Aug 2004 - Ring gear wear - 
After looking at lots of used ring gears, I have found V-8s generally
stop in one of four places.  Sixes generally stop in one of three
places.  A used gear will show this distinct wear pattern.  IF the
gear is not worn too badly, all six convertor bolts can be removed and
the convertor turned 1/6th of a revolution.  Put the bolts back in and
tighten.  This technique goes a long way to nurse a worn gear,
especially on a 6 cylinder car.  This trick works with Studebaker
powered cars, with automatics as well.
KK