If the "Display More Download Link" setting is set to Yes, you get a "More Files" link whether or not there are actually more files than are shown in the list. I found that unintuitive, so here's a change:
In the template dlcatdisplay, find this:
Code:
<{if $item[1][totalitems] > 0 && $settings[dl_displaymore] == 1}>
and replace it with this:
Code:
<{if $item[1][totalitems] > $settings[dl_maxcatarticles] && $settings[dl_displaymore] == 1}>
Then for the right column, find this:
Code:
<{if $item[2][totalitems] > 0 && $settings[dl_displaymore] == 1}>
and replace it with this:
Code:
<{if $item[2][totalitems] > $settings[dl_maxcatarticles] && $settings[dl_displaymore] == 1}>