Thank you for your suggestions. I'll ask the new doctor what he thnks; however, I'm leaning towards Piano's suggestion of discontinuing the low dose PDE5 inhibitors for a couple of months and see what happens. I agree that obtaining an erection, by any method, probably helps recovery.
Mulhall sites evidence that low-dose PDE5 inhibitors (Viagra and Levitra) help penile rehabilitatioin by getting oxygen to the penis; however, I'm not sure if the improvement I've seen has been due to the PDE5 inhibitors or natural healing. I've had the suspicion that maybe I've bought a lot of stuff (VED, Viagra, Cialis, Levitra, etc.) that
made me think I was doing something to improve the ED; however, maybe the improvement I have seen would have occured naturally.
Oh well, if nothing else its been interesting, and given me something to think about.