Short story for anyone who might find this thread after seeing the Red Triangle.
I saw an article on Android Police that there was 32gb refurbs for sale for $170. So, clearly we (XDA members) are not the same as normal users when it comes to troubleshooting and fixing problems. So, I bought my 2 sons 1 each and my wife 1 as well. While my sons are very young (single digit ages), I've taught them how to run code. The N7's arrived yesterday and after they went to bed, I fired up the computer and had all 3 tabs going at once updating from 4.3 to 4.4.2, charging, downloading,....
Unlocked all 3 Bl's and proceeded to install TWRP and ROM/Kernels. Point to remember is that I had too many things going on at once. On the very first recovery.img flash, I got the laying down android with red triangle. Flashed the recovery.img again and again the red triangle, all the while I was downloading ROMs and Kernels on my PC.
Then I realized what I was doing wrong. After flashing the recovery.img, I booted into the OS, then powered off and used the key combo to boot into recovery. Wrong!! What step did I miss? After flashing fastboot flash recovery recovery.img, I had forgotten to Volume up and boot into recovery from straight from there.
Once I realized my blunder, I was much happier. After that, it took me under an hour to install recoveries on all 3, flash ROMs and Franco r13, boot and reflashed SuperSU. Too many things going on at once and maybe a few too many drinks as well.