The keep is built up using two flipped window and chimney yellow wattle and daub buildings, shortened to fit inside the rampart. I added a second 1x8 reddish brown brick as a beam to the floor, rearranged them both so they are spaced equally from edges, moved the grey bricks to fit accordingly. I wanted to build up four towers on the castle, incorporated the pavilion roof of model B into the great tower next to the yellow wooden keep. I find this is the most efficient way to build two of the same sets, learning the building techniques and sorting out the pieces by building them into the castle. I started building both sets simultaneously bag by bag over a few nights. Here is a summary of the modifications up to version 5. LEGO 31120 Medieval Castle MOD, Version 5 by R Y, on Flickr LEGO 31120 Medieval Castle MOD, Version 5 by R Y, on Flickr Version 1 Design Notes please read towards the bottom of this post. LEGO Digital Designer and other digital tools
