After rolling toons as the other tank classes I decided to try my hand with the Sin Tank for PvE. I have done a lot of reading on rotations and stat priorities, but I am still having issues with the Dark Ward. Following established rotation that I have p/u on though the forums, dulfy etc.. , I cast DW and get my 15 stacks. Now, according to what I read, I am supposed to keep DW up hovering around 8 stacks if possible. My issue is that I don't seem to consume any stacks @ all. I cast and carry 15 through to expiration. I am currently @ 53 now and equipped with the Makeb 53 relic mods focusing on defensive stats and set up to tank. I am sure it is something I am doing wrong, but I just can't figure it out. I know it is somewhat of a fishing expedition without going into all the minutia stats on my toon and sec by sec accounts of my rotations in fights. But is there a pre-requisite skill that I need to have in the tree? Do I just need to keep practicing the rotations and work on timing? Any insight would go a long way.