you need a certain level of technical skills in order to do that. Maybe you have not increased your technical skill to the required level by repairing bot parts in the laboratory.
My tec skill level is 12, but I mean Ive been repairing a bunch of bots so either it wont level up for some reason or idk maybe I thought I was doing more than I am, you may be right though because I havent done bot selling all that much in thus run
I think QC starts at 15. (you can check hover over tec stat in MC stats screen). Repair (or upgrade) a bunch of bot parts and in 2 or 3 days you are at 15.
