Depending on the size of the fretwire in your kit, one or another of the mad scientists in the forum might have small lengths of fret wire lying about. I have all sorts of scrap bits, but it’s generally all jumbo wire, I think I have one length of medium jumbo left over.

Fretting is pretty much just banging the frets into the board, but you’ve got to do it very carefully. If you don’t have the luxury of a fret press or the hand held “Jaws” type vice grip press, then it’s a shaped wood block, plus a carefully calibrated hammer.
- Did factory cut the frets to exact length or did they leave them a bit long?
- do they have the tang notched to go over your binding?
- Are they all the same sized fretwire? (I ask as I have had a neck come in on one of my kits that had one fret a smaller gauge that the rest, luckily it was the 22nd)

If the frets are all shaped and trimmed to length, you can set up and bang them in as follows:
- sort them by length, first to 20 whatever
- clear your work area and set your tools up
- take each fret, set it in the slot, and tap or press the ends in
- take your block, gently tap the ends in until they seat against the board, then go back and forward across it unti it is seated across the entire length.
- work your way down the board from one end to the other (doesn’t matter if it’s one to 22/24 or 22/24 to 1)
- once you’ve got them all in, check to insure they are all seated properly, tap them in with the block if they aren’t.

I think there is a section in the build guide on fret dressing so I’ll leave that for now, there are also plenty of YouTube vids on it as well.

if you you are a handy type then you should be able to do this with minimum stress, but you’ll still need to have the frets dressed afterward and recrowned and that takes some real patience and specific tools.
- long levelling block
- Fret rocker or similar substitute
- small file for fret ends
- crowning file
- sand paper and steel wool for polishing

chances are it’s one of those jobs you’d have to get a luthier to do, but you’ll pay their prices for the work. You’ve already experienced the Typical Luthier’s Disdain for kit builds, and many of them simply won’t work on kits.

You are up in Brissy, so you have Australian Luthier’s supplies close the hand, I’d buy your nut blanks from there unless you’ve got a trusted eBay supplier already for these. I have found ALS quality good and price reasonable for this sort of stuff.

happy fretting, really look forward to seeing how this turns out!

Hope this helps