Greetings Doctor, Just read your post. I have been making Mozzarella, well, Armenian String Cheese for years and had some acclaim for it's perfection. Last year I began having a terrible time with my cheese not stretching, not this, not that, too dry or what ever. I had to stop making the cheese I was known for and began making other cheeses so as not to go crazy, even failed cheese is cheese, good and tasty but not just right.
The girls dried out our milk cow as she is with calf, but I will, I may began using a ph meter. I'll try to check in on your solving this problem as it may help with my own.
The best of luck to you.
We, our family is counting down the 12 days to Christmas January 6th. We celebrate Western Christmas with gift giving and began counting, receiving a small give each day. I wish you and those you love the very best and Holy Christmas!