Mine have done the same thing. All I can think is that is might have to do with using cages? Plants are doing well and producing but have some twisted branches.

How would Using cages cause twisted leaves ?

Well, I've noticed that the branches sometimes get hung on the cage while growing. This causes them to bend under and twist. After I free them they tend to straighten out. As fast as tomatoes grow, your obviously going to miss this sometimes.

My Amish Paste tomatoes are doing the same thing! It is strange weather we are having in WI, very dry. I water the raised beds every few days. None of my other 10 varieties of tomatoes are doing that, so I figured it's just how Amish Paste responds to heat. (This is my first year growing it) Though, I have a 13-striped ground squirrel trying to nest between it and my Roma, so I wondered if that had something to do with it. I'm growing mine on stakes, with some pruning. Amish Paste is growing the second fastest of all my varieties (Sungold is taking over the world.)

I saw a healthy little tomato on the Amish Paste yesterday, though, so I'm not worrying about it.

Root rot will cause these symptoms from over watering. Cut open a stem and check for streaking. If no streaking. Then slow down on watering.

We have had 3 very hot and humid days in a row. The tomatoes are still growing and actually look better. I don't think they were overwatered. I don't water everyday and we have had 2 days of rain since they were planted. I think it was just their own unique reaction to the weather and the cages. Thanks for all the advice.

My san marzano redortas have been doing the same thing, as well as the ones I gave away to some friends. Only that variety, perhaps it has something to do with the paste varieties? It almost seems like the plants are trying to turn thier leaves upside down. ???

CH