Hawk's Red Zone Conundrum

I wanted to bring some light to what seems to be a unfixable week to week issue with this offense. We seem to have a top tier offense between the 20's, but almost dead last when we get into the redzone. So what's the deal, is it lack of creativity?... is it Geno? or is it something else? I mean we have moved the ball quite effectively each week, but how do we get to 1st and goal from within the 3 yard line and not come out with TDs?
My theory is that I think we are using K9 wrong with short yardage. He has great balance and seems to be more effective when bouncing outside of the tackles. However, running up the middle is something I think he struggles with, or could be a combo poor interior push and he isn't stout enough to push for a yard or two. I would rather see a pitch to the outside have him out run the defender or take a DB on for short yardage. I know this isn't the only issue at hand, but this many trips to the Redzone and to be coming up this short time after time isn't just bad luck, its bad execution.
My theory is that I think we are using K9 wrong with short yardage. He has great balance and seems to be more effective when bouncing outside of the tackles. However, running up the middle is something I think he struggles with, or could be a combo poor interior push and he isn't stout enough to push for a yard or two. I would rather see a pitch to the outside have him out run the defender or take a DB on for short yardage. I know this isn't the only issue at hand, but this many trips to the Redzone and to be coming up this short time after time isn't just bad luck, its bad execution.