For those of you who are great at stripping bolts like I am, I finally found replacement bolts. I've gone to ace hardware, lowes, and home depot with no luck and even checked the woodcraft website. The bolts have to have the same Allen head or else they won't fit correctly (I put some hex bolts in that wouldn't screw in completely and they fell out apparently).
I happened to walk by these bolts at cycle gear and they are exactly the same size. The size says M6x20 and it's 3 bolts for $1.99.