I had a bitch of a time getting my D0 in. I would suggest two things: be patient and dont force it.
Get a pin file, or some emery cloth, and file the D0 to a point. Sometimes there are burs left over from the manufacturing process that prohibit the gold wires ability to set properly.
I've also read that on some motherboard there is a small amount of laquer covering the points on the board. If you still cant get it to work use a fiberglass pen and gently clean the D0
I also used needle nose pliers.
Check the manual and make sure the lights are correct after the installation.
My D0 just wouldnt fit. It took me 2 days to install the 10 second solderless adapter.