You can see the number of all seeders and leechers
here. Your torrent application will not show all leechers but only those which are currently connected to you, and this number changes all the time. So it is possible that at some point you will find no leechers connected to you although there are some leechers listed on LT. However, the leechers pop in from time to time depending on how the torrent pieces are distributed by the seeders and maybe also where the seeders are located geographically. At least this is my explanation for what I see happening in my ktorrent. Sometimes I have a leecher for hours and sometimes I get leechers for minutes popping in, out, and back in again. Only at the very beginning when I was the only seeder I had all leechers listed. So my conclusion is keep on seeding even if at a given moment you
seem to have no leecher connected.
@Crow: thanks for continued seeding! Right now I have 2 leechers from Mexico, maybe friends of you friend?

Wrt customizing, info on that is provided in the Home folder of every FM user account in the file
fullmonty.txt , which your friend could read, or he could check/post
here.
best,
-p.