I play with a really low action and the only thing I did on one jazz was to widen the nut slightly when I tried some heavy flats , I used an old roundwound string to widen the slot , which was a good little trick
I’m confident to set up most my basses, perhaps not a vintage one, I would leave that to a professional, but all the basses I’ve ever had have never needed anything done to the nut , it’s one thing I wouldn’t touch
The 414 is very good, and it’s got a single action truss rod I believe, which failed on mine, the 1024 which I’ve got now has a double action one which I think is a good improvement, apart from that I would definitely have another