I play a pally (4750 gs) 3 shaman and one lock (all 3450-3700 gs).

This team sucks right now! Or maybe I suck at playing them, that's why I'm posting this.

I have one sham dual spec resto/ele and usually run him as heals.
With a dedicated healer I can clear H UK consistently and nothing else. I can sometimes clear nexus, if I get really lucky with the Mage chick boss that throws everybody around, but usually she is a wipefest until I get to annoyed and log out.
I can kill the first two bosses in H AN, haven't even tried anubarak.
I can sometimes clear GD, but the colossus is a pita, even with the right totems.

I can't kill anything else consistently and I'm really frustrated with my lack of progress. Is it me? Is it just a lack of gear to OP these instances? I don't have time to raid, so that is not an option for gearing them out. I just feel like I need to run heroics to get gear with badges, but I struggle so hard in heroics that i get frustrated.

Here is my biggest question: some of you talk about clearing heroics in mins, killing bosses in 9 secs flat (niley is my boxing hero) ... Am I getting the power and performance from my team that they are capable of? Or do I need to get better at playing them before I expect more?

I use the click macros from the wiki, I play instances with a metronome running to get the most dps I can (less than 2k over a whole run, maybe 2400 on boss fights).

If more specific info about my play is needed I'll edit this later, gotta get back to work lol