Yes, I agree, there is so much to learn and I am not sure what I am doing right or wrong either. I too LOVE the washed rind cheeses that has soft paste (Morbier, Tallagio, Reblochon Etc.) but I have been messing them up; either the rind is too thin and followed by a few mm of dry paste before you get to the good stuff, or it takes so long to build it that the paste gets too dry. From some reason no one can give me a straight answer such as "make the cheese, keep is in 90% RD at 55F for one week, then every two days rub bacterial wash on it, wipe it dry and brush it lightly"). I now have Reblochons aging at week two. The Geo just started showing up but I don't know that this cheese will ever get enough rind to start making a moist paste inside before too much humidity is lost (I do age it at about 85% RH/55F) - just clueless so a lot more milk will get lost before I get answers.
One thing that I do find helpful is videos. I find a lot of little clips of traditional cheesemaking in farms in Europe on YouTube. I also have a few episodes of the great Australian series 'Cheese Slices'. what you see there in factories and farms all over the world give you a really great idea of how tough you can be on curd, how they measure pH and salinity, how they mold and press cheeses correctly and the affinage process. Getting the right formula is still difficult. I will share whatever I find...
As for cheese that is too hard, chalky or flaky - I think that happens in the vat. Watch the curd cutting and acidification levels of the milk. I began experimenting in techniques to prevent it a few weeks ago. Let's see how the new batches come out.