steering wheel problem

[Mark C]

Last week, I was noticing a clicking when turning the steering wheel (started just after it had been at the mechanic's shop, of course). Then the other day when turning hard, it sounded as though something broke inside and now it clicks and almost catches on something inside - any ideas or similar experiences? It happened on my 1992 535im...
Mark Crum
1992 535im 155k
1988 535is 98k