I got a MLB kitasan and renting a MLB Creek and I can't get higher than B+.
It's a consistent B+, I can't remember the last failed run I had, but I can't break through.

at 11 PM I use a moisturizing cleanser, gently massaging and rinsing
I always drink lots of alcohol, even though it dries out your face and makes you look older
then I stumble to bed followed by finally stroking my giant girlcock