Dave, check the outer screws on the front pad, it looks like it is only held by the middle screw, other two dont look like they are doing anything,
make sure they are in the thread, was,nt that clear on the pics, as this can make the difference between a good day and a bad day on the range, i know from experiance when i made my repro No4T, it was only when i removed the scope that i found the problem, and it was the screws on the front pad, after 5 -10 rounds i had lost zero.