I am a fulltime installer in central PA. and would love to help you, but the solution is so simple that I could never justify the expense involved with the travel.
The 4228 is a huge over kill and too narrow in beamwidth to cover the closely grouped strong signals. Just install an RCA ANT751 antenna aimed North. With that you will receive at least one, or all of the three PBS stations, as well as all of the other networks.
If you need any further advise, or you would like to discuss other antenna options, you can contact me directly on my website.
www.tripleplayantenna.com.