Returning player... some questions about changes

The last version I played was .A. Not sure if stuff changed or I don’t remember it. I picked the Last Fire Fighter Start with Bio Fighter.

I checked my encumbrance. I have 0 encumbrance on my Torso, but it still says -2 melee, -2.0 dodge. Why?

What is your dex?

Are you overburdened with too much inventory volume?