These are the 3 Blocks that go on either side of the Masts and the one on front.

I made the Blocks by drilling a small hole to one side of it and inserting a ring in it that I made with some 1mm Round Nose Pliers. Then I use a bit of Superglue. I found that after you let it dry, you have to drill out the Side Holes because either the Wire or Superglue plus it up.