The Y5-2-6 and the Winegard YA620 are specialty "Cut-to-Band" antennas. They are designed to cover the frequency range of real channels 2 through 6 only (Low-VHF). You should not expect them to serve as a general purpose 'all-channel' antenna.
As elmo has already mentioned, the small flat antennas are generally UHF only designs ( real channels 14 through 51). In addition to KCWX on real CH-5, you have a mix of UHF and High-VHF (real channels 7 through 13) signals to receive, so a UHF only design would not be ideal.
If I was in your situation, starting from scratch, I would use two antennas and a combiner. The main antenna would be a Winegard HD7694P which is designed to receive all but the L-VHF channels. It would be pointed at about 110° per a compass. The second antenna would be one of the Low-VHF options mentioned above, pointed north. The signals to the west, real CH-26 & 32 should be received through the back of the HD7694P.
The combiner is a bit of a specialty item too. Here's a source,
http://www.solidsignal.com/pview.asp...-%28zhlsj-1%29. The device is a set of tuned filters that pass low-band TV signals on one port and the rest of the channels on the other port. This prevents the two antennas from interfering with each other when combined to a single down-lead.