Hi! I have your exact same crib, but I'm having trouble getting the front rail off! I got all four bolts out so it completely open up, I can put the rail parallel with the ground, but I can't seem to get it completely off, seems like there is a fifth bolt at the very base of the crib under mattress support, I can't see it. Help!
If that does not work, there is potentially a bolt in each metal bracket that holds the wood support (wood that attaches to the metal mattress frame across the front). Bolts are vertical and the heads are on the bottom.