There should be a few more warnings that come with kit guitars. They certainly aren't a finished article where all you do is bolt or glue the neck on, fit the hardware and fit the strings and away you go. They are very much a work in progress and on all of them, the neck is going to need some attention, even if it's just polishing the frets. But most would benefit from a fret levelling, fret re-profiling and polishing, and having the nut slots deepened.

Those Electrosockets are good. A lot more reliable than the standard jack cup.