Is our OL too fat?

Just watching Denver's OL, they just seem to move so much better than our guys. They just get out and move faster when pulling or getting to the 2nd level on run plays, their footwork and agility on pass blocking is good. Overall they just seem to be in better overall physical conditioning than our guys. I noticed the same when watching GB and NE's OL, too.

Grubbs, Evans, and Streif just seem so slow and unathletic out there sometimes. Grubbs and Evans can be road graders at time in the run game, but I'm thinking their heftyness may cause their footwork to lack in pass blocking, which leads them to getting beat quite often in the middle. Streif is losing a step every season it seems.

I know we miss Kromer a bit. But if we do end up keeping these dudes arohnd, someone needs to light a fire under their arse in the offseason. I'm not saying they need to be Armstead athletically, but shite, at lease sacrifice a few lbs for better mobility. They aren't getting any younger