I want to make one post with every private pack code so I will put the list here. I also have trouble finding codes, so put any code you know in a reply.
A 1.5.2 beta pack without gregtech
A 1.5.2 beta pack with gregtech
A pack that makes survival harder
A RPG modpack; they are adding divineRPG when FTB gets updated to allow 1.6 packs