Default [Q] Cannot Find Nandroid

My GNEX had to go back to Samsung after a system wipe completely fecked up my phone, anyway I got it back on Thurs evening. This morning I decided to unlock and root, I used Android Toolkit and that seemed to do the trick, then decided to install CWM and that installed fine but I cannot flash recovery, it sits there with the progress bar displaying 0 -100 but never moves, I gave up and installed TWRP, that works fine I can get to recovery mode and decided to do a nandroid backup which it says was successful, done this twice now and both nandroids according to the finish info says they are 600+ Mb in size but I'd like to pull one of them from my phone to my PC so I can then up that to one of my online storage areas. Problem is every root explorer app I install either hangs when accessing the Data folder or it says there's nothing in there, the nandroid must be somewhere as I can see my storage capacity has dropped. Any suggestions?

TIA