Looking at the Payne County site in the
database, it appears that the site is Simulcast. Simulcast can cause issues with many scanners, including both the 325P2 as well as the 996P2. See this
Wiki page for more on simulcast.
Look at the map of the site locations (on the link above, as well as
here). If you can take your 325P2 with you, and get close to one of the towers (say, a quarter mile or less), see if you start hearing traffic on that site. If so, then simulcast distortion may be your problem. The only scanners designed to deal with simulcast problems are Uniden's SDS series scanners.
The "home" system for my location (Dallas County) is
NTIRN, which also has simulcast sites. While I have an SDS100 & SDS200 to handle the simulcast, I can also monitor much of the activity on my 325P2. I do that by using an older antenna, instead of a "gain" type antenna for the 700 & 800MHz bands. I also lay the scanner flat on my desktop. The "poor" antenna, and the horizontal positioning, instead of vertical means that the scanner gets a weaker signal. That helps the strongest site (relative to my location) overcome & drown out the weaker, conflicting, signals from other locations. No guarantee that this would work for you, but it's worth a try. Read the Wiki article for more details, & remember that when fighting simulcast, "less" antenna can be better than a more efficient one. Also, try moving the scanner around at your location. Sometimes, a difference in location of only a few feet can make a big difference. Perhaps something like a file cabinet, or the refrigerator on the other side of a wall, might block the out of sync conflicting signals, allowing you to hear radio traffic despite the simulcast.