DJI O3 Camera spacers for the DJI O3 camera should be a little thinner than original design for the FR7 v6 with carbon uprights. This worked for me and all I did was trim 1.2mm from original design which all can be found here:
https://www.cncdrones.com/FR7-v6-Frame_p_18.html#tab-11
The author remixed this model.