I twist as I go, Tommy, and tho they don't look as pretty....I tend to under stuff a little. I can always twist a few more times to tighten 'em up, but - if the gut is stuffed to tight to twist.....you can split them.
I soak mine in almost hot water for about an hour, then force water thru them , then squeeze the water out. Remember after you load them on your stuffer tube - you need to use them pretty quickly, as they can lose moisture if you push too many gut sections on a stuffer tube, and then if it takes too long to use them.
And - of course, you could just have gotten some bad casing..