73-76 sliding calipers not sliding?

I just did (today) Brake Conversion on my 64 Barracuda with the same set up that you have, except I kept the Small pattern, my 65 has the Big Pattern and both have the sliders. They both operate like other saying.

The Caliper moves hardly ever, and it will slide inboard as the pads wear down. Its not to bad of a set up.

I noticed a difference in pedal throw with power brakes on my 64 Barracuda, seemed the throw is longer than the 65 Signet is a Manual, press the brakes and lock up you go.

MY QUESTION FOR YOU...Did you use a proportioning valve? And did you convert your master cylinder?