[NTG-context] Malayalam character overlapping with footnote number

Hi, I am trying to prepare a moderate sized document in Malayalam using Context. Overall I have been successful. However, there are a few rough edges for which I need help. This is the fourth problem I face. One character, ഼ U+0D3C, when used in \footnote[഼ ]{the foot note}, overlaps with the footnote number. How can I ask Context to provide extra space between the character and the footnote number? Thanks, ajith