I don't know about to much fat, when I make my Stiltonesque cheese I throw in 1/2 gallon cream with 4 1/2 gallon of milk.
they always turn blue (although most of my cheese do, go figure
) I use 3/32 ts PR/PV in my make.
you might want to air it for awhile every day if your not already doing that.
I'm guessin we'll see, tomorrow I will be starting one, can't believe it's over 3 years since the last one WOW!
Harold