Tar Heels Seeking to Fix Offensive Line Posted Oct 6, 2021 UNC center Quiron Johnson called it mental "stuff." Offensive coordinator Phil Longo cited the need for more consistency. Coach Mack Brown cited injuries, running back patience, the need for schematic and protection changes, and just getting whipped. Quarterback Sam Howell believes the group is motivated but not "pleased" with their performances. (Inside Carolina)