I have a Multibit HD wallet that has more than .5 BTC in it that needs recovering.
It is a pretty rough situation I am trying to workout for someone and is as follows.
The person was really good about keeping seed words up until this last time.
He then became affected by the error of knowing the password, but it doesn't unlock the wallet.

I have tried:
mbexport and forked version
decrypt_bitcoinj_seed-master
I have run many different token variations on the password in hopes that it gets a bite if just some of the characters were off (from what I read that bug related to how UTF 16 translated?).

     What I do find interesting is that the old YAML files from the prior wallets (version 0.4.1) of Multibit HD only had some basic preferences settings (Show balance: true..etc). However, the YAML files for the 0.5.1 version of Multibit HD has 2 values show as:
encryptedPassword: 88 Characters with +, / and == at the end
encryptedBackupKey: 64 Characters with / and + but no = sign

     My main question for the post is to find out where these would be useful as I do have the rolling and zip backup files as well.