SEC Mod Help

I’m hoping someone can help me figure out a solution/building technique. (I posted yesterday about this, but I'm reposting because I got help for part of it but still need help for the rest. Also, I updated the renderings and the .io file in the dropbox for those who want to help. The changes include switching to the real colors and the actual pieces (as opposed to substitutions) since I realized part of the fix needed correct brick placement for fixes) So, I'm working on an MOC I bought on...