Ok here is the report, I put in the screws as shown 4 inches apart along 3 of the floor joist's. I used about 25 or 30 screws No fix, No change, still squeaked. I went down in the basement and had the wife walk the hallway, as I put in angle brackets etc. No change.. Hmmm Noticed that the most noise seemed to come from the north wall of the hallway not the center of the hall way. The problem is the plate on the wall, some nail in that was squeaking when you walk in the mid span of the hallway and it moves the 2x12 just a fraction.. A couple of 3 inch screws drilled in from the basement thru the 2x12 at an angle to go up into the 2x4 plate at the bottom of the wall.. and WA-LA. Squeak NO MORE!:cool2:
So my problem was not fixable by using the product, It was not the subfloor nails squeaking over the joists, like many floor problems are. I am sure it would have fixed it if that was the problem, but that was not my problem. The product worked as advertised, they all snapped off properly with the fixture and could not even see where they went in after pulling out the tops of the screws. So I spent my money, and did not benefit from the product, but it did get me off of my butt to try to fix it, and with some time and help it was fixed.
James K0UA