First, let me say that Eli's brackets are much better than the ones SMB supplied with my van. I did have some cracking of the body with the SMB brackets.
When I mounted Eli's brackets the awning was too close to the penthouse. In fact, they touched:
You can see how close it is.
So, I took the awning off and modified the brackets. Basically I cut the offset in half and welded them back together. At the same time I added a 3rd bracket. This 3rd bracket came from Fiamma and was made for a new Vanagon, but it is the same concept as Eli's brackets.
You can see where the brackets were 'doubled' up and welded. The 3rd bracket had to be cut and welded and the small clamp for it was modified also.
See how the awning is moved away from the penthouse. Only 1/2", but it looks like more.
The 3rd bracket is mostly to hide the holes from the SMB brackets.
Because of the way the brackets support the awning it was easy to mount it. The awning hangs on the brackets without any fasteners needed. Then it gets bolted together so it won't fall off.