Hi Invar, Looks like you straightened the tower out so that gap will be there at the bottom. You have to build up around the base like I did until it sits flush. I added some extra spruce horizontally so the bottom of the tower would sit into it hiding the seam since it was not going to be glued. In your case since you want to be close to the ILM studio model you can extend or sand down the panel lines on the squares at the bottom and add longer one to go past the seam hiding it. I would probably sand the vertical panel lines off and add a piece that would go over the seam to the bottom and add the panel lines back in with some .20x.20 or .30x.30 spruce. You would never see the seam and it would be close to the ILM one. You definitely have the skill to sculpt the extra piece you will add with the bevel edge along the top.