That is beyond odd! To be honest the machining work and custom parts being made to cut the shaft and assemble it correctly would be mind boggling! A custom needle, machining the shaft internally just doesn't make sense.
I will almost bet you a spacer was installed, that's it.
Along with not doing anything with the forks throws the geometry off, WAY OFF! I bet it doesn't corner very well, pushes in the corners etc. Getting this addressed will change the handling of this bike for the better!
If I can help in any way, even if just for advice I'm here to help. PM me if you need anything.