Ray, I wouldn't worry too much at this point. The median time to nadir is about
44 months. And, that drop isn't necessarily in a straight line. If you get 3 increases in a row then you can start to sweat. Other than that you may be just having semi-bounce or just slow to nadir. Looking at it another way, at two years out my PSA had dropped 80%. At 15 months out yours has dropped 80%. Life is good.