In reply to jezb1:
FWIW I dislocated my right knee in 1998 but it is now my left that has niggling issues... Our bodies are strange like that.
I have also just upped the amount of training I doing and I am slightly paranoid about getting injured. As such I am making a real effort on stretching, core strength and antagonists. I can't say that my climbing is getting better but (touch wood) I am feeling good and I am doing more and more press-ups, dips etc..
Rock rings are great but there are lower impact ways (with respected to your shoulders) of working core strength. To me it sounds like you might just be doing too much high intensity stuff when it comes to your fingers and shoulders. If that is the case then it makes sense that your weaker side will get injured first.
Certainly, the main take away point I got from doing my FUNdamentals 3, was that most climbers do too much high intensity training and not enough endurance.
Anyway, best wishes and please update the thread if you manage to come to a firm conclusion or manage to resolve matters.
Post edited at 17:51