If a mod is done well to a stock guitar does it change value?

[Jim]

Of course any mods to a well known higher end acoustic will devalue. The only question is by how much and that depends on whether the mod is a really easy to reverse one such as a different saddle material or different bridge pin material, or one that is hard to impossible to reverse such as a different electronics set up, or an impossible one to reverse such as the added on inlays on your guitar. From what I can see on your guitar the dot inlays do not appear to be professionally done since on my computer screen they appear to be white such as boltaron or maybe mother of pearl while the inlay that was done by the maker appears to be in some kind of abalone or paua? Mismatched inlays stick out like a sore thumb and to me they do not look professional. Also, adding inlays after a guitar is built is something most luthiers would not attempt. Inlays are done during the construction process before a fretboard is finally shaped so that the sanding and polishing process of the overall fretboard levels the inlays and the top of the fretboard perfectly. Adding inlays after all of that has been done often results in the inlays not being perfectly flush or the fretboard being sanded down around the inlays making the overall fretboard profile a bit different.