Thanks for the advice so far!

My Eye timing could definitely be improved as I often hit a wrong button. As for Onslaught, should that not be used on cooldown? Or is saving that 20 gauge for Cleave/Upheaval more beneficial?

I understand that I'm limited by the buffs given and that raid co-ordination only usually happens in established Statics (might look into joining one) but I hate to think that I'm under performing.