3 May 2005, dkuha... said

Some of the boards are held in with the f connector nut, an
additional
1/4 hex screw with plastic ferrule near the front of the board also.
Many time the heatsinks that go through the board are bent to stay on

the board, but they are bent so far that they will hold on the side
plastic rail. Take a flashlight and look under the board to see if
this is the case and CAREFULLY bend the tab back out of the way.

It turns out there wasn't anything catching on the sides, the board was
just tightly fit into the tray. I just needed to insert a flathead
screwdriver between the back edge of the board and the plastic tray and
give it a twist to free push the board forward.

Mark