X-Rite colorchecker and Red Files r3d

Hi. I use a few times my colorchecker X-Rite with blackmagic and S-log footage but now, i´m trying to use it in Davinci with red files and i don´t understand nothing. The results are wrong. I try every source gamma but is a mess. Of course there are something that i´m doing really bad ands i appreciatte any advice.
Thanks so much.