Good job Stever! That drone looks deadly...
I see no flaws from my point of view, so your methods worked very well.

With MoI, there is often more than one way to achieve the same effect.

Just in case it helps, here is my example on how to use Network to create some complex shapes:

http://moi3d.com/forum/index.php?webtag=MOI&msg=4610.1





And also, if a Fillet does not want to take effect, you can try working with Blend to make a smooth round-over between two surface edges.