I've set up many dish 500's down south with ease. I'm working up here in Denver area and this thing don't make sense. I set skew to 100 and elevation to 43 as per zip code. Get a signal on 129, 119, although weak. Since I have a 9 degree separation I assume skew is correct. But I'm 10 degrees off on elevation. Using a tripod and it's level. Any pointers here?