Hallo,   The filler blocks are placed on the starboard side. Because sanding with the sanding machine is faster the blocks are not made in advance  in to the proper shape. This is now probably the most ugly hull ever shown MSW….. A few minutes of sanding and the shape is already better. If you want to do this in the same way Do this outside. This makes a lot of dust .... Now further  filling and sanding until the desired shape has been achieved.