Some set ups just fit your hand better. Once you’ve experienced this, other necks, even ones that you were perfectly happy with previously, don’t feel quite right. For me, Jazz width necks never feel right and some full fat Precision necks are just too big. My Goldilocks nut width is 40mm (give or take). You’ve plainly found a set of dimensions that suit you best. Take a note of them and use them when selecting new basses in the future.