Need some help
 

On my 88 325i, we have just recently started to have some problems with the driver's side windshield washer. The darned thing moves only intermittently although the passenger's side is moving just fine. Also, it seems that the driver's side wiper easily twists so that even when it does move it can interfere with the passenger's side or even push itself past the windshield area.

Any help would be appreciated!!!