@sma3,
I also notice the difference that you noted and sent Charles an email asking him to look into your question. In one of the David Snowball commentary, MFO uses mutual data from Lipper and that could be the source of error.
Later this week when I have time I will run the calculation starting from 12/31/2019 through 8/30/2020 based on the NAVs and adding the monthly dividends. The maximum DD can be obtained from the Excel plot as well the recovery period.
Best regards,
Sven
October 2020