Default [Q] Verizon G2 running VS98012B ROM, have questions

I just purchase, less than a week ago, two LG G2 phones on Verizon. Awesome phone. I am curious about the root flag in the units. If I root the phone and it sets the flag does a complete flash back to stock reset the root flag back to unrooted? Secondly, where can I find the VS98012B stock ROM (non-rooted) files to reflash the device?

Thanks,
T.E