Invest in linemen that don’t have an injury history. I mean when you lose guys left and right the depth eventually is needed and isn’t always ideal after the second tier guys.
Ya know this sounds strange, but imo, some of this could come down to the evaluation process when they are in underwear at the combine, not just a sheet of paper that says how many injuries the player had previously.
Understanding how the body is built, the physique, the joints, can be projected to a degree imo.