At the same time, WJMO began facing increasing ratings pressure from crosstown WZAK, which in 1981 successfully switched formats from block ethnic programming to urban contemporary. On January 22, 1990, WRQC changed their call letters back to WJMO-FM (92.3) and entered into a hybrid "Churban" Urban/CHR format with WJMO under the "Jammin' 92" brand, with both stations simulcasting during morning and afternoon drive time. At all other times, WJMO moved to a gold-based R&B oldies format with the "Solid Gold Soul" brand, having dropped most current music from their playlist, while WJMO-FM continued with the hybrid CHR programming. The drive time simulcasts ended by that October, with each station adopting their respective format full-time.