Bed bolt holes rounded out.

[rs74]

As it says they are rounded out and not sure what to do when going back together. I had to cut them off with a cut off wheel from underneath to get the bed off. One of the bolts had a phillips screwdriver slot built into the head of the bolt. These bolts only had 3/8 of a square shoulder to it where as my K10 had long square shoulders on them. I am not sure what or how to tighten the bed back down and it look correct. Any ideas?