WHM Hummelfaust A6S | Advice?

[Vallory]

I put A6S cause I'm an idiot and I can't change the title.

Our static decided to hit A5S a few weeks ago, and we're still spending far too long trying to get Hummelfaust down.

Right now, we're doing solo tank (pld), solo healer (whm), and I'm having a hard time healing. I'm responsible for maybe 20% of the wipes on it? Not horrible, we've downed him twice now, double KO since we're having a little trouble with dps as well.

All our dps are hitting 1400, 1500 tops
MT and AST 800

My issue is, we've wiped a good handful of times from the tank going down, and I feel like I could be doing something more efficiently? If my timing is off at all, he goes down. Sometimes I just can't keep up with damage, sometimes it's miserable because hallowed ground + benediction is on cd so we do an attempt without it.

Is there something I'm missing here? This damage is absolutely ridiculous, and I feel like I'm using everything I have at my disposal. :x

Thanks guys!

Continued in second post, cause character limits. :x