Speedometer Calibration

Has anyone on here calibrated their speedometer on a 2019 or 2020 with either the hyper tech or the rough country? I spoke with hyper tech and they mentioned there being some difference between a 2018 and 2019, my truck is slightly off not by much but its really annoying and I want to get it fixed. spoke with a couple guys on here they were great help with guidance but all trucks that were calibrated were 2018 and under. so please anyone here with a 2019 or 2020 that had their speedometer fixed with what's out in todays market?

 

Bump for an answer to my 2019.

 

just had my 21 done and it was a kit bu rough country. I have the box and cable in case i need to do it again they said.

 

mine was 4.5 mph out at 60 or 70, cant remeber