I'm using the alnumsec.sty package. The following code:

\alnumsecstyle{nnlr}
\otherseparators{0}
\surroundarabic[][.]{}{}
\surroundletter{(}{)}
\surroundroman{(}{)}

is producing a chapter and section number without a period at the end. I want section number to be followed by a period.

Alternatively, is there any way I can "turn off" alnumsec for the chapter numbers only? Thanks