Zbrush help pwease

hey folks, i've got two peculiar problems currently:

how do i blend the balls together so the line inbetween is not visible?





on picture two:
the part i've made a circle around, has a flat edge that bulges over the sculpt. how do i remove that? i've tried Smooth brush / Flatten / polish / hPolish / sPolish, but all of them leaves a line.



i hope you can help me with this