[QUOTE=osco53;19117353]" I'm leaning towards the 110 mm size but I'm afraid of putting too much weight on my shoulders since my right shoulder has a problem."

How about using what ever length stem on your bike, move you ass back 10 mm or forward whatever mm to see which position is most comfortable to your shoulders then get the length that is approximately proportion to the distant you butt shifted back or fore on the sit.

Another advice is don't worry about it. During a ride, what ever part of your body felt stress just put less weight on it until the discomfort relieves except you can't do nothing about it when your prostate is hurting.