I bought a 3"X 78" metal bracket from a company to hang a beam for my daughter. It screws to the wall and has five 1" rods that go into the beam to a depth of 6". Just wondering if anyone has drilled a beam for this and any hidden ways to screw it up. My plan is to drill the holes with a 1-1/16 forstner bit to give a little play. The rods seem to be at right angles to the bracket. Any advice appreciated.