At this point, the only thing that might help is a signal meter - but for the final tuning, the actual receiver is better. In other words, you've already got everything you need.
If your wife doesn't care enough to help you, find another wife.
Actually, it's better to just crank the volume all the way up and do it by ear - at least in the beginning.
Your signal is in the "decent" category - just because you can see TV. This means you're already WAY beyod the "rough in" stage. From here, it's VERY small moves. Start by pressing "a little" on an edge of the dish. You obviously don't want to press hard enough to break anything, but some firmness should be necessary.
The receiver is slow to respond to signal changes - much patience is needed, but you'll get the idea of how much knudge makes how much of a change.
If you're lucky, you'll get an idea of which way it needs to move at this point.
Once you've got a bit of a feel for it, then and ONLY then, loosen the azimuth or elevation bolt(s) a LITTLE - there needs to be some drag or you'll lose what you've got and end up having to start over. It's a good idea to mark things before you start - just in case.
P.S. You must have one STRANGE dog to have chewed up RG-6 where you need a ladder to fix it.
