Help me repair my Ranger build! (Phys Crit/Mana/ES)

I stole my build from this thread:

- Final Build: link.
- Current Build: link.

Character Stats:

- Character Level: 41.
- Campaign Progress: Act 1 Cruel.
- HP: About 500 (!!!).
- Energy Shield: About 300.
- Mana: About 300.

Abilties:

- Default Attack (More on this later).
- Frenzy (Single target).
- Poison Arrow (Zap and run boss/champion killer).
- Split Arrow (Multi target).
- Clarity.

First off, let me start by saying that I'm eminently clear that my HP wont fly. It wasn't always this low; I shifted my gear heavily in favour of energy shield in response to my HP buffer feeling too squishy. I'm using Evasion + ES equipment at the present time.

My problems are numerous:

- The build is too squishy: Even with a bigger HP buffer - I had about 750 in Act 3 Normal - I felt much too weak. Eva/ES equipment seems like a bad joke to me, neither of those stats contribute much at this level. Since the build doesn't call for Iron Reflexes and there's no strength, armour is out of the question though. I don't think I can even sport Eva/Armour gear without some +strength gear.

- The damage is pitiful: Crit doesn't come in to its own until really late in the game, and I'm having troubles dealing with my low DPS. I've turned to stacking +elemental damage rings, necklaces and quivers in order to mimic a level of DPS that I feel would be appropriate at my level. This is further compounded by the next issue...

... - It's mana hungry: This is the absolute worst. I've been leveling my attack skills whenever it asks me to, and I can't sustain them at all any more. I currently have a mana regen neck and have sought out some +mana on gear. I have a clarity, which didn't seem to help at all at level 1. I have since leveled it to around 8 or 9. It leaves me with about 130 mana after reserve, and my regen is such that I can spam Split Arrow continuously or Poison Arrow for short periods (8-10 shots) before running dry. For the past ten levels or so, I've stopped leveling my skills because they're too costly, though, and adding a second aura is completely out of the question.

I don't know if this gal can be saved but I appreciate any help you all can provide me. I don't know what I'm looking for, exactly. Change my mode of thinking, if need be. Give me some gear targets to shoot for. Strategies. Whatever. I don't know.

Thank you for listening.

There are a few things I can comment on.

1. Don't use Clarity. It's a mana-sink where the mana regen it provides doesn't outweigh the cost, especially for Int-starved Rangers. You'd be better off using Grace with Reduced Mana support instead.

2. Stack Mana Leech with Frenzy if you're having issues with mana. All other skills should be leveled to get the max benefit.

3. With the points invested in the build, I would've done this: Build at 48 points

4. Use Bear Trap or a Decoy Totem to help pull off aggro.

When I did Cruel, I only had around 800ish HP and low DR from EV-armor, so I was in the same boat as you are in with no crit. I think your biggest mistake was going for the second Nullification wheel when the one underneath Mind Drinker should've been take first. Builds aren't everything, progression is just as important. I tend to use my reset points for tweaks in my build if I think I need something more than the current set of passives I'm aiming for.