Great explanation. Thank you very much! 
One more question: I know you post the daily Balance Post Divs. How is the daily Balance calculated?
One more question: I know you post the daily Balance Post Divs. How is the daily Balance calculated?You're welcome! The Balance Post Divs is just the total of the EXCH+MINE+SELL accounts (total account balance) less the current management fee.
The NAV/U is simply the total net asset value (all balances, less management fee) divided by the total number of outstanding MINE/SELL pairs.