As loaded as the Dallas Cowboys' offense stands to be in 2026, there are still question marks along the offensive line. Dallas hasn't gotten good play out of either one of its tackles the past two seasons, as both Tyler Guyton and Terence Steele have struggled. Dallas also explored moving Pro Bowl left guard Tyler Smith to left tackle at the end of last season, which creates a domino effect. While Smith wasn't thrilled about it , he is willing to make the switch to do what's best for the team. However, moving Smith would put the Cowboys in a position where they might have to start career backup T.J. Bass at left guard. Knowing all that, it's important for the Cowboys to have options. Even if Guyton starts at left tackle, the Cowboys need as many insurance policies as possible to protect Dak Prescott's blindside. Drew Shelton repping at guard and tackle Penn State Nittany Lions offensive lineman Drew Shelton. | Mark J.…