I have the same question. I just got in my boyds thumbhole stock and the factory screws off a plastic stock don't fit. The front action screw is long enough and will fit, but the rear action screw is not long enough. Also where can I get pillars to fit this stock. I have pillars from stockeys and they will not fit in these smaller holes of the boyd stock. I have read about using light fixture rods, but was wandering if there was one pre-made? The boyds stock comes with something epoxied in the front screw hole but is not a pillar?