I have mentioned it here, and to other people when out digiscoping, that I suspected all along that the camera was not focusing correctly.
After reading on the Yahoo digiscoping newsgroup that others were having trouble with focusing and sending their cameras back to Nikon for testing, I did the same just before the warranty ran out. It came back no better. It just struggled very hard to find some point to focus on. I never found out if the other people had any better luck from the service department in America.
Just before I bought the new camera I was out at a local reserve and standing next to a bloke who was getting pin-sharp photos hand-holding a Canon G2 to the scope. He said that he'd seen someone else earlier, with exactly the same equipment, having the same trouble focusing.
The camera on that day hunted and hunted to focus on a stationary gull and then finished with the screen being totally blurred - before I even took the photo.
A couple of weeks before that another birder in the same hide had a cheapo Canon digi camera and the Opticron adapter and he was getting some fantastic shots. He held his camera to my scope and the resulting photo was pin sharp - so I knew it wasn't the scope that was at fault.
I had a LCE adapter, sturdy tripod, cable release, tried all the settings know to man that people had recommended - all to no avail. I did have some decent shots, I will admit. I don't quite know how, as later on the same settings would produce nothing but rubbish. But to say I'd been at it for a whole year, it was not what I was expecting. I should have been getting a lot more decent shots than I did.
I now have a bit more faith and shall be out this weekend, weather permitting, snapping at everything that stands in my path!