Honestly - stop complaining
And no this isn't an "oh look at me I can heal it" post....this is a stop friggin complaining post.
None of the FP's are difficult to heal under-geared/well-geared/over-geared..whatever...does your gear help? of course...but your skill and common sense are more helpful to you.
So I'm sorry - but either you are lacking in some way, your tank is lacking in some way, your dps are smashing face into a wall somewhere and not killing things in a timely manner or some combination of the three.
How do we know this? Because an entire group of under-geared individuals can go into any of those FPs and down it no problem...why? because they use their damn heads!.
Video on youtube or it didn't happen.