KML import into SW Maps and RTK Plus

Our surveyor has a plat which he converted to KML for me to use with RTK plus. After successfully importing it into SW Maps I find everything is off 6’ to the South East of his actual survey pins. Any Idea what is going on? Thanks in advance!

While I’m unfamiliar the KML files, I’d hazard a guess maybe something with the ARP offset is different? We do have a guide for accuracy verification here https://docs.sparkfun.com/SparkFun_RTK_ … ification/ that can be used to ensure the RTK Plus is achieving its full precision

Could the 6’ difference be due to our surveyor using NAD83 datums vs Sparkfun RTK using WGS84 datums? If so is there any way to force Sparkfun to use NAD83?