I've had other bows that had small bolts that are designed to keep the limb bolts from backing out. There's no such small bolts on my Scepter V. The previous owner of my Shadowcat had placed nylon bolts in the threaded holes in the riser that made contact with the limb bolts in order to keep the bolts from backing out, I guess.

My question is, are these retaining bolts necessary or not?