I converted my 1A Autographic Junior to use 120 film and tried to run a roll of Acros thru it but I found no markings in my new red viewing window. I had set a new window for mid-roll frame marks based on a roll of TriX paper with a format marking down the middle. Does Acros have markings down the middle of their paper? If not what about TMax? I need a 100 speed film as my max shutter speed is 1/100; It just makes life a little easier.