Hello Zach,
The mohu sky. Hype. You pretty much nailed this antenna's claim to fame. Any time you see an antenna bragging about having an amplifier built into the antenna - run. In reality, instead of using elements to create gain, they are just doing it on the cheap and amplifying the signal. In the case of Sky, it's a single UHF element that has a amp hooked to it! So, it's not going to do well with weak signals or signals that are 1 and 2 edged terrain obstructed. You require an antenna with gain and weak signal capturing ability.
First suggestion - dump the sky. Return it if you can.
Second suggestion. Go buy a quality antenna that is designed for the 2-edged conditions that you have from Pittsburgh. A candidate I might jump for would be an
Antennacraft HBU33. You can find it here:
http://www.antennacraft.com/Antennas/AntennasHBU.html and here:
http://www.solidsignal.com/pview.asp...na-%28hbu33%29
Orientate to magnetic heading 335.
I'd have a reasonable expectation to see everything from Pittsburgh in signal strength down to WPGH FOX.
Cheers.