It took me over an hour to remove the connectors from the headers - but I did spend some time labeling them. Not an easy process. I used a screwdriver to help unlock the locks. But thinking back maybe an old credit card would work better.
My inventory is a bit different - 19x 9 pin, 4x 4 pin, 1x 6 pin, 1x 12 pin, 1x 15 pin. I inventoried them because I haven't decided yet to go locking or non-locking.
On a different matter - I plan on installing your NVRAM on this board but I noticed there are some pins sticking up (I guess they're test points) Should I cut them off to be sure they don't touch the bottom of the NVRAM board?