Shoulder pain during pulldowns

[woodj6]

I recently have been getting this painful pop in my anterior delt/upper chest region when performing lat pull downs and was wondering if anyone else had ever suffered from this and/or knew the cause. It only happens when I am doing wide grip pull downs though which has baffled me. I have put off going to my orthopedist because of the possibility of surgery and the horror stories I have heard from others but somethings gotta be done.
Cheers