The piece that the cable runs THROUGH on the firewall. I think you understand and we're talking about the same things, but you could be talking about the trans side. The Steering column peice is what I am talking. Mine didn't completely rip off either. It stress cracked and was like a spring. Everytime you pushed the pedal it would move and then come back.
I was thinking all the other things you have done seem like it should have fixed it. Maybe the arm in the trans needs messed with? I would email Brokevw...if anyone knows he will.