All comments you’ve received represent valuable input regarding the levain. I want you to know that you can use a looser levain if you choose. As Paula indicated there was a specific drive to reduce “sour” in the version of the Purist you have, however, this is a matter of personal preference. I didn’t mind or really notice the slight tang associated with our earlier versions of the Purist. But it is really valuable to note these differences and nuances. Do some experimentation yourself and be sure to enjoy one of the loaves. Do you notice a difference?
And good job using the forums! Have a great mother’s day and grandmother’s day!