Hamelmann's Sourdough Rye with Walnuts

I just tried my first recipe from Hamelmann's "Bread" - the Mellow Bakers September challenge: Sourdough Rye with Walnuts. Since I had enough mature rye starter I decided to experiment a bit. I made two sourdough starters, one following Hamelmann's instructions to the letter, ripening the starter for 16 hours at 70 F. The other got the 3-steps treatment (3 feedings at falling temperatures, from: M. P. Stoldt "Der Sauerteig-das unbekannte Wesen").