<VV> positraction differential question

[John McMahon]

Thanks to Bob Helt and Chuck S. for the quick answers!  It seems that I 
indeed have a positraction differential.  I just measured the torque needed 
to turn one yoke with the other clamped in a vise, and it takes 25 ft. lbs. 
The manual says it should take a minimum of 50.  It does not say what the 
consequences will be if the figure is less than this, but I assume that the 
differential will not do "the positraction thing" very well.  If I don't fix 
this, will I merely have a differential that is no better than a regular 
one?

Thanks,

John McMahon
1965 Monza w/4 speed