you know, I've given the Amber Trails brass pins and now maple filigree sound hole. But I never thought about Inlay stickers.... I have a set of traditional Martin's. I've yet to see any one offering Seagull gull's yet. but it has been a few years since I last looked..
I get the feeling I losing am sustain on the high notes because the lutehole is in contact with fretboard. DO you concure?
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I'm not sure why the lute hole touching the fret board would cause less sustain. Unless you think by touching the fret board, the lute hole is somehow bracing the top in a certain way that effects only the high string frequencies?
===================================== One Alvarez in the hand is worth two Taylors and a Martin in the guitar store!
On most guitars the feedback controller does not touch the fretboard at all. It becomes part of the top. But the NE fretboard overhangs the sound hole and the controller is in contact with it.
When I used the lighter eBay plywood one, while I trimmed much more so that it does not touch fretboard, it did not have the muting of high notes sustain. I used belt desk sander on the plywood. I hand filed the maple. I think I need to do get physical!