I have a STAB HH90 motor, and it took me 4 hours on my temp. setup before I got a lock on my South Sat. Then it took me another 3 hours when I mounted on its permanant pole, during which I was sure something has failed in my system until finally I got a lock.
I was also off 6-7 degrees from calculated dish elevation angle, supposed to be 41, ended up being 34.
So it is very important that you spend enough time at every angle on your dish elevation while going east and west 5-10 degrees. Also, pick a strong TP to work with on your S. South. The person that said he is above you, can tell you what is a strong Tp on your S. South. Program that in your receiver, and go at it again. You can see my temp. set , I sat on chair behind the dish and worked on it until signal showed up. It is so touchy at first, but once you do it once or twice, it is not that hard.
Viewsat Ultra VS2000 Receiver, Fortec 90cm dish, Fortec Universal Ku LNB, Stab HH90 motor, 75ft coax.