Health question.. rotator cuff?

I've worked on cars since I was 15. Gas station mechanic off & on until I became a dealer tech in '84. Around early '11 I started having a lot of pain in my left shoulder and it became increasingly harder to reach over my head when working on a lift. Finally broke down and saw a doctor about it. Asked me to remove my shirt then wanted to know if I had ever broken my shoulder as it was noticeably lower than the right (I nor my wife never noticed). Turned out to need a shoulder replacement. Had it done in early '12 and had to retire as a tech (no more heavy lifting).
Best to have it checked out by a doctor. :thumbsup: