I have two old torrents that seeded properly but three others that will not seed. I can see a client waiting for those torrents but my client refuses to seed.

I haven't found any detailed info on how torrent clients negotiate with each other and decide to seed or not seed. It seems to be a dark art

I assume it depends on the specfic torrent clients and how they implement the torrent protocol.
Rodinia, which torrent are you trying to download and which version of Deluge are you using? I can get my own copy of Deluge and then see your Deluge client will talk to my Deluge client.