Are you sure it is really changing for the worst? When I'm eating to gain weight I can easily put a few inches on my stomach. My stomach got to 3-4' larger over about 3 weeks (eating a LOT). However during the first 2' my skinfold measurements went down by 2mm. Its mainly the difference between being not full and somewhat dehydrated (from low carb) to being super hydrated and very full. Very little was actual fat. Actually the fat only started coming on after the first 2' or so. Even when I got to around 3-4' the measurements where where they started out. The only reason I stopped eating so much was because nothing really fit anymore

I'm taking a more conservative route for the rest of my HST cycle. High protein always, about 500C extra around my workout (maintenance throughout most of the day) and about 250C extra the next day (mostly in the AM). Basically I'm trying to keep my Calories up during the times when it is in the most anabolic state and keep them at maintenance the rest of the time.