I took the time to convert a formula head to print a push stroke when I was back in NY. It took awhile to switch some parts around but when I got it working, it was very finicky and to much squeegee pressure by even a single twist had the blade bending over. I did some printing with it for some 1/2 tone work and when I used a good tension screen, it did print some nice dots but nothing awesome or better than the head next to it pulling.
The older machines work wonders when you put high tension screens in them and parallel the pallets.