Okay... So for a while I've been breezing through KOTFE and KOTET with minimal difficulty. Even the climatic battle against Vaylin in chapter 8 wasn't terribly hard once I figured out the mechanics. I've played through chapter 9 (story mode) until the part where I have to defeat Vaylin's spirit. This time I have no companion. I've figured out the overall mechanics of the fight; stay in melee range, use the healing memories to heal yourself or hurt her, run like hell when she starts charging up Overload, stunbreak out of Force Slam, etc. But I can never seem to get her past 40% health. I've modded all of my gear past level 200, and I'm playing as a Sith Assassin tank spec. Should I switch to DPS? I've been stuck here for weeks, and this is my first time playing KOTET lightside, so any advice is appreciated.