Not sure what went wrong other than possibly have my face stuffed in too much of the afore mentioned BFA but what should have been a quite bitter bitter at around 70EBU is actually face-collapsing bitter. Recalculated from my notes to find my hop additions take it to 164

I seem to remember reading somewhere that our tolerance of bitterness ends around 110/120 so I'm well North of that.
Going to be interesting to see if this mellows at all but I suspect I could be in for a long wait!