Since taking over for Jimbo Fisher, Mike Elko has started to make his mark on the Texas A&M program. A former defensive coordinator under Fisher, he is already making changes inside the locker room ahead of his first season. According to offensive lineman Trey Zuhn, one of the biggest changes is keeping the players accountable. That goes beyond the football field, too. Zuhn said Elko has “cracked down” on making sure the Aggies are doing what they need to do, and that’s been the biggest difference since he took over. Whether it’s making it to class or meetings, Elko is setting a high bar for h…