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I am in the process of putting parts on the board and noticed that there is an extra resistor on the ver2.1 board next to the C8 capacitor. The board indicates it to be a 1Meg. I have not been able to find a schematic for this version of the board. Everything else seems to be identical. I am looking for any information anyone may have about this difference?

Also is anyone using a value other than 1meg for R2?

Thanks for the help!