Problem with that type of bracket (swan neck) for a motorised system is that it is liable to flex as the dish is moved from east to west. Hence you will not follow the arc correctly. I think that you will find that wod has similar problems when he set up his motorised dish and now has T&K's with a pole between them. PR
My Satellite Setup
1m channel master, jaeger smr1224, Inverto black ultra twin, technomate tm-1500ci, broken receiver vantage x221ci, New additions Skybox F5s and technomate tm-5402 HD arriving soon.