Thank you for the additional information about your location. I looked at the satellite view and WESH 18 does seem to clear your neighbor's roof, but there are trees beyond his house that look like they are in the signal path. Trees block TV signals:
http://www.hdtvprimer.com/antennas/siting.html
scroll down to Trees and UHF
WESH has three transmitters:
https://rabbitears.info//market.php?...&callsign=WESH
The WESH transmitter on RF channel 18 is considered a DRT (Digital Replacement Translator) that is running only 10 kW, which is not a lot of power for UHF.
https://rabbitears.info/tvq.php?requ...ms&facid=25738
But, it has a very directional antenna that sends only 1 kW ERP in your direction:
http://www.tvfool.com/?option=com_wr...dALLTV%26n%3d3
I think the TVFool report is a little too optimistic about WESH on RF 18. The FCC Longley-Rice coverage map shows your location outside the red contour for WESH 18 because of its low power and directional antenna that favors the SE:
Link to that map:
https://rabbitears.info/contour.php?...a&site=2&map=Y
The coverage map for WESH 11 shows your location inside the contour:
Link to that map:
https://rabbitears.info/contour.php?...a&site=1&map=Y
If raising and/or moving the antenna doesn't help with WESH, I suggest you add a VHF-High antenna to your DB8e to try for WESH on RF 11. The VHF antenna can be combined with the DB8e using a UVSJ UHF/VHF combiner with no interference.
VHF-High antenna:
Stellar Labs 30-2475:
http://www.newark.com/stellar-labs/3...vhf/dp/48Y8141
its big brother 30-2476:
http://www.newark.com/stellar-labs/3...vhf/dp/71Y5462
UHF/VHF combiner between the antennas and the preamp input:
https://www.antennasdirect.com/store...Combiners.html
It looks like this inside the enclosure:
