The seniors on the line were good - they played well last year. However, I'd say that just because they were able to start doesn't mean they were 100%. Now the young linemen know just how much stronger they need to be. They certainly have potential, but they have a ways to go to be as good as the lines of the past few years.
No lineman will play an entire season and be 100%! This is simply an excuse, one we use every year, kids have to make plays, we did not.