I have an IKEA Ostana wall light with a 3.5" wall plate that I'm trying to attach to a electrical box in the wall with only two screw holes 2.75" apart. I've looked around but can't seem to find a simple way to get these to fit; even if I had a metal adapter plate with screw holes in the proper spots, the screws from the Ostana mounting plate go right about where the drywall ends in the wall. What should I be looking for?
I don't have the tools (power drill, work bench, clamps, etc) right now to machine holes into the Ostana wall plate, which would be an okay option except then I couldn't turn the light in certain orientations.