I have a Dish 1000 and wondering what signal strength I should have on the 129 satellite. After resting something against the dish today I decided I better check and make sure I still get signal and didn't knock it out of alignment. I seem to be getting from 28-31 on the signal strength meter on screen. I tried tweaking the dish slightly without loosing the bolts and I can't get it any better. Is that around what it should be or is that low?