Got it, new BurritoRoot3 is the answer, a bit more involved than what I thought, but the job is done. If you have Go Launcher going, supposedly need to go back to Kindle Launcher. Luckily all old android drivers and ADB were still working.
[Root][Bootloader] BurritoRoot3 - Kindle Fire Root. Easy root edition - RootzWiki
Let me know if anyone needs help with this while its fresh in my mind.