As others have already observed, your problem is not a lack of signal power from WNED. If not for the powerful local signals, you would be receiving signals from Buffalo with little difficulty.
Does the information provided by Tower Guy and this thread,
http://forum.tvfool.com/showthread.php?t=1024 make sense to you? Or is the information overly technical?
The shorter antennas can be used to make a tuned antenna array, but you alone can judge your skills and ability to succeed at such a construction project.