I would definitely not be concerned about any lack of high precision machining of a Ti backspacer from Cuscadi, their F&F is on par or better than Spyderco itself. If anyone besides Sal's crew could make such an item, Cuscadi would be the first place I'd seek out. Everything I've ordered from them is ultra high quality.
While it is very high quality, the Cuscadi carbon spacer for my Techno doesn't sit as perfectly flush as the factory backspacer and based on all the pics on the internet I've seen, this isn't just mine.
I'd order a Ti backspacer in a heartbeat, though.
Big time gear snob
SFKW sugilite Kiwi
Byrd Cara Cara II FRN(lives in bunker gear)
Far too many sold...