I am a avid shield user inside of PVE and was excited to see the new Bulwark set, when i went and tested the the set with the backpack it was shortening the time of repair. The wording on the talent for Process Refinery gives the impression that it should increase the time of repair. Instead it shortens the repair and gives less repair than without the back pack, and i am not running the chest. i know that increases the amount of repair. i would find it weird to have a set that forces you to wear the chest and backpack just to get the same amount of healing.