How did you find the correct elevation angle? I just got my T90 and i am in the process of setting it up. Like you said, there's only a big bolt with 2 nuts. I have an angle finder and i placed it on one of the triangle shaped part that is bolted into the center of the dish. According to Wave Frontier, that's where the angle finder should be. However my elevation angle is supposed to be close to 46 degrees. When i set it up to 46... it looks as if the center of the dish itself is pointing somewhere low... in my backyard... not at the sky. So i wonder if i got the proper elevation. I did get a good signal from the bird i was trying to find... but then again i'm not even sure that this is the proper bird