Thanks,
I used Remesh in Sculpt Mode.
I’m also wanting to try and avoid retopologise (as I will be sculpting fur onto this base model as it’s for 3d printing).
Just wondering why I’m getting these jagged lines when in wireframe mode it looks smooth and in Weight painting mode it blends off smoothly.

And if I use the Pose brush in Sculpt mode with Face Sets I’m also getting this harsh falloff too.

Am I missing something?