Did my quattro become a fwd?

[McCohens at aol.com]

With the change of seasons and cheaper gas I noticed something  different 
about my car.  It is an 80 quattro, with an MC1  swap.  Winter is coming so 
the sticky tires are off and a narrower all  season set is on.  With gas 
getting cheaper I started opting for the good  stuff and also changed wastegate 
springs so now there is about 12  psi of boost.  On a recent rainy day I was 
playing around an noticed the  front wheels can be induced to break loose 
quite easily but the rears seem to be  maintaining traction.  Now I am 
wondering if the torsen is not working, if  that is possible. Do these things wear 
out and is loss of power to the  back a typical failure mode?  No funny 
vibrations or noises otherwise  from the car.  
Any other similar experiences or suggestions?  
And no you can't come over and do a full throttle burn out with my  car!  
If anyone is going to blow the drivetrain up it will be me.