Yes, getting the wires into the slots can be a bit tricky. For Kelsey it is a snap to do, but I still sruggle with them sometimes ( no patience)

Just hold one end of the wire in place with a screwdriver, and pull like crazy on the other end, that should seat the wire into the "v" and slice into the insulation enough to make contact. I'd also suggest testing continuity on your wires with a multimeter, but it's not totally necessary.
Funny thing is, I've been selling the Oscar optic boards for a while now, and never thought of using that extra screw hole for a cable tie! Excellent idea!
