Steering rack question.

[Simon.Allcorn@tup-uk.co.uk]

     I think I have a dying steering rack, and I was wondering if anyone 
     else had experienced this problem. When the steering wheel is turned 
     left /right the wheel gets tight at a point, almost as if the end of 
     the rack is being reached or a kerb has been hit. You can go past this 
     point to the end stop by turning the steering wheel with more force. 
     The problem is only noticed when parking because the point it happen 
     is quite far to one side. Also when it does happen blipping the 
     throttle and keeping the same pressure on the steering wheel will turn 
     it past the point. I think it could be a worn-out rack or top mount 
     bearing. Has anybody experienced anything similar or got any ideas on 
     it ?
     
     
     Simon