Broken window regulator

Thr drivers side window on my 82 380SL does not work and upon investigation I found a broken window regulator right where the regulator makes the "X". I am not sure that I want to try this replacement myself (may change my mind). Does anyone have any advice on this or better yet does anyone in the greater Los Angeles area know a shop that would do this type repair. Any help or advice is appreciated. Thanks in advance.