I think I have been spoiled by how easy wow is and that was the source of my frustration, I was expecting the first instance to be easy mode like wailing cavern or rfc but its bloody hard and the bosses are really nasty. It does make it loads more satisfying when I finally get something down though.

I swapped my guardian and rune keeper back in for the warden and minstrel, and it seems a lot easier. I got the first boss down in GB maze after a few tries but I think I'm going to leave the dungeons for a while and level up more as suggested. I'll keep the warden and minstrel in a three man team so I have them ready to swap back at a higher level if I want to try them again.

I did also did the full fellowship version of the tuckborough skirmish, and managed to only wipe once. That was due to not knowing the lieutenants abilites yet more than anything (a priestess of flame set 3 of my team on fire when I wasn't looking ). Skirmishes seem the way to go for now until I get more levels/practice at things, the bosses in the dungeons are way too demanding at the moment. At least I can get my group content fix by doing the skirmishes as I level, even if I'm not up to the proper dungeons yet.