Playing as healer, from Australia, Garuda is near impossible

[Castillan]

I'm not in Australia, but this is one of two things. Either the tank is not building enmity quickly enough, or you're using too strong a heal (Regen, Cure II) right off the bat (a possible third option might be that you outgear the tank by a large margin). If they're DF groups, my money is on the tank being bad.

I don't know what to do differently. Tanks have 3500hp or so. Within 10 secs, they're down to 1000hp, and that's starting with Stoneskin on them. Have to lob off 2 x Cure II's, and then a regen to try to conserve mana, and then the aggro is on me.

My groups are always pugs. I ask in my guild, and no one wants to go. They all say "it's easy", but not one of them actually balls up to come to help, leading me to think that it's all bluster.