It was not in the center of the hole so I couldn't just wrap tape around the shaft. I taped a piece of rigid plastic tubing just larger than the screw head onto the shaft of the screwdriver, with the end flush with end of the blade. That helped me center the blade, and I got it on the second try. Not knowing where to find a 1/4-24 hex head bolt, I cut a second slot in the slothead bolt Numrich sent me and "phillipsized" it. Frank, could you maybe switch from hex to phillips?
Now I need to find someone who can let out the .410 wood forend I bought to fit my 20ga (couldn't find a 20ga forend). And figure out how to get this nasty white fungus off the Tenite. What kind of creepy Body Snatcher organism grows on plastic? Ye-e-ech.
In case anyone wants to know, the Tenite stock takes a short screw that screws into an adaptor which then screws into the rear end of the - receiver? The wood stock takes a longer/thicker screw, dispenses with the adaptor, and has a 1/4-24 thread. I have the other dimensions if anyone wants them. The smaller screw is 0.2115" in diameter with 24 threads pre inch, so 12-24?
