For various reasons, I have a some Clay Paky Alpha Spot HPE 300s that I am supposed to use on a show Monday that don't have their omega brackets with them. They were shipped in from Texas and I am skeptical that the brackets will arrive in time. I am looking at the pictures and trying to gauge size from that and it appears that the Martin omega brackets that go with the Mac 700-2000 would fit. If this is the case, then I can probably get a few of the brackets from a local rental house but I don't want to waste their time if this is not the case. I was looking at the Elation Design Spot575E manual since I could likely get their omega bracket too and it looks like it has the same omega bracket as the Martins but, again, I'm not really sure if this is the case. Can anyone specifically confirm or deny that the various companies' omega brackets are interchangeable?