Something else if it's not too late..  The 2D plan doesn't take into account any curvature in other dimensions at this point.. Some spilling or  other method may be in order, even though the amount of curving at the garboard is very slight..     Here is an example where I used masking tape to trace the shape of a plank on my Resolution.   Note how the shape of the plank when laid out flat, looks more curved than when traced on the hull.