Oh we'll I'm sure it will balance out in a few days
we are going for 90% CDF

maybe its normal for you guys

this is my first 90% CDF block

I have had more then 50 of them.
Pretty much by definition, 1 in every 10 blocks should be a 90% CDF block, so you just joined at a lucky time.
Yep, we had a great little run for a few days ... and then a long block. Doesn't matter how many times that pattern plays out ... it just seems to last forever ... << NOTE TO SELF >> ... be patient! Variance and luck will smooth the waters over the coming days.