@lastmark It's pretty unlikely that RatRig would have gone to the trouble of creating and uploading a configuration file but it's easy enough to check. Option 1 with no power on the board, is to remove the SD card and put it in your PC. Look in the folder called "sys" - that's where confg.g will reside if it exists. Option2 is once the board is fitted and wired up, open up the web interface and look at the system files.
(PS - this is from a retired 69 year old wood worker) 🙂