Sounds like a rare case...
For me, 94.5 from Greenville is listenable into NC but gets weaker into Gastonia and worse beyond that into west Charlotte... Adjacent signal interference from 94.7 (W234BY) Limits 94.5 east beyond Gaston County, and even worse, Charlotte (Mecklenburg) is further restricted from the Northeast by Greensboro's 94.5 (WPTI), would prevent Greenville's WKVP reaching anywhere north of Uptown CLT.
91.9 is also weak in Gaston County, but does better into Mecklenburg, from CLT Airport & East.
94.1 (WWLV) is also better going north (Sugar Creek @ 85 near IKEA / 485) but that hasn't been a great signal for me in CLT itself, but somehow 94.1 was better to the west (at times) in Gaston County beyond 91.9's limit.
91.9 here in Gaffney lately I can hear some classic Christiausic, tho weak, I'm sure its the Cokesbury Station and not Charlotte's K-Love WRCM...Speaking of that, has anyone noticed the Greenville K-Love station Identifies & announces "Charlotte" in their Top of Hour intro Jingle, shortly after listing Station ID. They used to mention 106.7 Atlanta with station ID when they first signed on, but now ID only mentions Charlotte 91.9 / 94.1