As for over-bittering the Bitter, I made a Bitter as the second batch of a partigyle, and didn't cut my hop additions to account for a lower than anticipated OG. I was aiming for 1.050, but hit 1.039. So instead of 43 IBUs (.87 BU:GU), I got 47 IBUs for 1.2 BU:GU.
However, at 6 weeks, this is turning into one of my favorite beers, and yes, it is quite bitter
