You can do this yourself! The only part of re-assembling a Delica/Endela/Endura/Matriarch 2 that can be a bit tricky the first time around is getting the lock lever back in place.
Here is a disassembly/assembly video by Nick Shabazz:
The slightly tricky part starts at 10:00. What works well for me is to put that last pin slightly into the FRN, then use two hands to depress the lock lever, and then, with the pin partially in place, press the side of the knife down on a flat surface (while holding the lock lever in place) to force the pin through.
There are plenty of custom Endura scale sets available on Ebay (the Endura uses the same scales as the Matriarch 2) .
Here is my Matriarch II with Boomer52 scales:
https://www.instagram.com/p/COizY-KjA4L/