Really? It’s a bass with nearly a £4 grand price tag, it could be a very expensive mistake. There must be something out there that’s fretless and better than the Sire you’ve got, maybe a TRB would be similar to the NE2 and they are available fretless. When I saw Nathan live he used a 6 string TRB for virtually the whole concert. The NE2 sat there as his spare.