Don't know if I'd like to confess to being a veteran just yet, but I do have a fair bit of experience on various FS and HT 29ers (oh, er...and a few 26ers ) - and to give you some perspective, I teach Mtn bike skills.
I haven't ridden your model of bike, so can't be 100% sure if you've got a set-up 'issue' - and there are so many other variables, bike/rider size, speed, surface etc etc. However, one thing that I have noticed with all 29ers (to a greater or lesser extent depending on model & frame size) is that they tend to require more steering input or 'body English' and/or lean to initiate and then hold a turn. I have found that a lot of 29ers tend to try and run wide on corners when there's some seated pedalling involved (i.e. climbing switchbacks). TBH, most of these 29er handling traits can be compensated for with technique - just takes a little practice and patience.
I'd recommend having a bit of play about, practicing cornering with different body positions and lean angles. Don't worry, after a few hours you'll most likely adapt your riding style to the bike and it'll be fine.
Or, of course, you could have a half day skills session with a 29er savvy Sheffield based skills coach .... ahem cough
If you're interested the latter, please have a look at http://www.letsmtb.co.uk/