Too narrow margins in legend

[Konrad Zdeb]

I'm using the following code to graph a box plot.

// Generate the chart
graph box varlist, ///
    over(SomeGroup, sort(1) descending label(labsize(vsmall))) ///
    nooutsides alsize(40) ///
    lines(lwidth(thin) lpattern(solid)) ///
    box(1, lwidth(medthin)) ///
    box(2, lwidth(medthin)) ///
    box(3, lwidth(medthin)) ///
    box(4, lwidth(medthin)) ///
    ytitle("YTitle", size(small)) ///
    ylabel(, labsize(vsmall)) ///
    b1title("XaxisNote", size(small)) ///
    plotregion(lstyle(none)) ///
    title("Title", size(medium)) ///
    subtitle("{it: subtitle}", size(small)) ///
    note("Outliers are excluded.",size(vsmall)) ///
    caption("{it: Data Source: Source}", size(vsmall)) ///
    legend(rows(2) ring(1) size(vsmall) position(6) rowgap(.5) ///
        region(fcolor(gs14) lcolor(black) margin(medsmall)) symxsize(5)) ///
    lines(lwidth(vthin)) ///
    name(name, replace)

The generated legend has very narrow margin next to the label on the left hand side:

I tried to address this by providing margin(medium) but it messed up the legend as it made top and bottom margins massive. Is there a neat way to control left and right margin in the legend region? I'm using the Burd10 scheme when generating the box plot.