I guess this is my answer then, the Dolphin is just a friggen superhero. I can charge FSD in the Dolphin while literally AS CLOSE AS POSSIBLE to the star (without dropping out) and it never goes above 65%.you should not charge the fsd while in the scooping range - and certainly not in the max scooping range.
start the fsd as soon as your fuel scoop disengages
If this isn't possible with the DBX through engineering or any similar such thing, then I'm selling my DBX. I'm not interested in having the risk of temperature damage while doing cartography in deep space. Even if I can change my method, it'll slow down an already slow process while making a tedious journey even more tedious.