I thought about claiming it was a design change to address porpoising.
Fortunately, it is quite minor, and really only exists at the keel and within an inch or two either side. Frankly, by the time I get it glassed and a keel on it 90%of the problem would likely be covered and solved... but it should be pretty simple to get it right with filler, a long straight-edge, and some longboat sanding. I also have a little to do just in front of the scarf joints in the bottom section - it looks like I was a touch heavy with the sanding there while I still had the panels flat.