That's good. Tuning of box changed to your liking. I suspect restriction occurred rather than damping. Same effect as making a smaller box. Carpet is very dense.
Now observe the bass if ok pa din ang tonal balance. Sometimes when you retune the box, the bass hump (curve) moves so humihina elsewhere. Since your lows improved, I hope hind bumaba ang midbass. Since you are happy naman, I suspect walang problema.