My apparent success with the first one, and skim milk on sale for $1/4L (yes, that's right) meant I just had to try it again.
For any who knows the Canadian milk marketing board system, getting milk for this price is about 75% off. So, taking a note from Danbo, I bought as much as I could carry. Here are my notes and photos from a double batch of Ricki Carroll's gorgonzola dolce.
The key lesson from this make was, "don't get distracted during ripening". The temperature went up to 40C. Assuming my bacteria were dead half way through the process, I added another sachet and hoped for the best.
This time the flocculation factor test worked perfectly and 48 minutes later, I had curds to cut.