Interior of the Oline Pass Blocking: Horrible or Worst Ever?

Not giving a good option here. Some PFF numbers(not gospel but good for ball parking):

Guards/Centers
Goodwin- -11.6 overall, -13.5 pass blocking, and +1.3 run blocking

Evans- -8.7 ovr, -19.4 pb, and +8.3 rb

Grubbs- -1.9 ovr, -2.1 pb, and -2.2 rb

Lelito- -0.5 ovr, -2.4 pb, and +2.0 rb

meanwhile:

Tackles
Strief- 6.3 ovr, 6.9 pb, and -2.2 rb

Armstead- 6 ovr, 1.6 pb, and 3.9 rb

Harris- -18.6 ovr, -11.9 pb, and -7.4 rb

So while no one did too bad(or good) run blocking(and Evans actually excelled there), the interior was absolutely abused in pass blocking(especially Evans with an absolutely ludicrous score).

And we have absolutely no depth at tackle. Strief and Armstead are really solid but Harris is absolutely atrocious.

To put things in perspective, we had 3 players with a higher than 1 pass blocking score, and one of them was Ingram(47 pass blocks, and he was actually pretty good at it; being that he has shown he can catch, run, and block we should try to resign him). The other two, as shown, were Strief and Armstead.

Run blocking was better, with 6 guys above 1(Evans, Meachem, Armstead, Graham, Lelito, and Goodwin). Evans was the best at it, but it doesn't make up for his pass blocking being as bad as it was. Graham actually finished ahead of Lelito and Goodwin run blocking(201 snaps).

On the bad side, Harris was the worst, followed by Lorig, Watson, and Hill. All 4 finished with -3.1 or worse.

While the run blocking inside was pretty good, Evans and Goodwin alone combined for a -32.9 rating, with Grubbs and Lelito being slightly negative in the -2 range(-37.4 all combined).

Maybe Lelito can step into the guard or center spot, but we need to find at least one more player in the middle or we will be doomed to repeat this year.