We're given the recovered rotor starting positions as VJNA. We're told the indicator groups are FCLC QRKN
When I set ENIGMA to the recovered settings, I try to reproduce VJNA using FCLC as the starting positions and type in ORKN expecting VJNA but I get CBZU as the message key instead of VJNA as they show as the recovered message key. Can anyone tell me what I'm doing wrong?
I'm not sure what you are trying to accomplice. Do you want to find the initial settings of the machine which reproduce the VJNA key? This was done with a completely different set of starting positions. This setting was chosen so that when you type FCLC QRKN your result is VJNA VJNA.
I think the problem is that the message indicator groups FCLC and QRKN were put together using the bigram table called Doppelbuchstabentauschtafel or double-letter conversion table (from the ciphermachinesandcryptology website). I did not account for that.