My 2 cents worth on Loose rivets question. An elderly relation of my wife has been diagnosed - current PSA of 7.8. He's 86 and his doctor has said that if he hasn't died of anything else before he's 120 then to come back and see him. The drop in quality of life and the upheaval caused by surgery at his age would not be worth it. So he's having injections once every 3 months to keep it quiet and he's enjoying the rest of his life.
As for me - blood test on Thursday - watch this space.