Only able to perform traffic stop in FIB Buffalo

I've already ensured *everything* is 100% up to date.

There is no crashing, so no RPH logs(besides a silent crash after dropping a prisoner off at the PD and it deactivated all plugins somehow...; reloading all plugins and going back on duty fixes, but that's not related).  I go on duty and all that just fine. I choose LSPD, choose my FIB buffalo(Which happens to be a '14 Charger, haven't been able to find it since..) and the rest are vanilla. As I recall, Even with model mods, the vanilla vehicles are capable of tagging vehicles and performing traffic stops. Instead, it just activates my horn, or on my controller, my lights. The FIB Buffalo is simply the only vehicle I'm able to utilize(And even then, sometimes it doesn't work with the Buffalo either, but that's just a restart to fix due to ghost crashes). Not complaining, since the '14 is a nice car, but It's tiring staring at the same car all day, ya feel?

One piece that might help may be a mod I attempted to use that added a new "agency" under the "Common/GTAV/LSPDFR/data/custom" folder. I believe it was 11john11's LSPD pack, which was uninstalled shortly after. Any ideas on a possible fix or workaround? Thanks in advance.