I mentioned high ABV because it's higher than what the kit suggests it should be (6.8 - 7.6), even by Midwest's most optimistic information (highest starting OG and lowest finished FG). To me this implies maybe light on post boil volume, maybe. Since you were able to calculate ABV, presumably you had/have OG and FG. What were they?
The hop load in the boil is similar between the MWS Hop Head and the NB Surly Furious. The Hop Head has 2oz leaf for dry hopping and I found some estimates of 4 to 5oz loss per ounce of leaf dry hop. Since the dry hop loss only accounts for one bottle of beer, say even two or three bottles just for good measure, it's not anywhere close to the gallon or so indicated. The only conclusions I can see are -
Post boil volume was low (which may also be why ABV is so high)
Lost a bunch to blow-off (is this true or not?)
Transfer from one stage to the next was very conservative
Perhaps some of our colleagues will see something else.