My understanding of 5/3/1 is that Wendler intended the pulling volume to be made up using assistance work. So realistically in order to achieve this you would need more pulling assistance work than you would pushing assistance work.
Therefore if your assistance work is balanced, it is quite possible that you aren't doing enough pulling work.
The main lifts are what they are. Don't change that.
"The fastest way to get strong muscles is also the fastest way to make them bigger. We know what works best to make them strong in the shortest time possible. If you want to get big, do the thing that makes them strong." - Marc Rippetoe
Zdravko Veselin Gaeta
I am not a powerlifter nor am I a bodybuilder. I just want to be big and strong.