First time stuffing sausage. I made up 15# of Bratwurst using Martin's Wisconsin (Sheboygan?) recipe. I fried up some of the leftovers. My wife and I really like it. I stuffed all the sausage and then when I went back to make the links the casings broke. Did I over stuff the casings? I left the sausage out on my back deck as I was making it. It was 18 degrees today. Could the cold have made the casings stiff? On another thread someone mentioned pinching off the sausage before twisting the casings. I did not do that Did I just miss this simple technique? So, what's the best way to make the links?