I went to the hardware store today to get my pipe to set my black mesh c-band 10 footer on and the pole seemed to look a touch to big when I was about to pour the cement, I asked for a 3.5" 10ft metal pole, however, 1, this dish isn't here yet, I am meerly getting the pole first to cement it in the ground, then getting the dish...and 2, the pole the guy gave me is exactly 4" in straight across not 3.5" inches, I have other poles that measure exactly what they are supposed to be (example a 1 5/8" pole is exactly 1 5/8") but this one that is supposed to be 3.5" is 4" instead...so I am taking it that the guy gave me the wrong pole? Or is this the right one and will it work instead before I go and cement this in the ground? Or does it have to be 3.5" straight across exaclty?