My bed is very obstinate. I'm near the end, at the part that requires brute strength to push all the proper bits into their matching holes.
Brute strength is something I lack.
Maybe I can hump it up against the wall or something.
ETA: In further furniture innuendo, I'd like to add that my equipment wasn't big enough for all of those screws.. but it worked out just fine once I figured out that tilting my tool at the right angle produced the desired result.