I had to chop my Nitto stem as well, I used the bandsaw at work and finished it with a belt sander to get it nice and flush. Keep in mind that you might have to run a die on the bolt as it runs out of thread, start with a 9mmx 1.25 to the length you want, then run a 8mmx 1.25 to finish it off. Worked great for my application, actually better, as the die I used have nice new deep cuts.

Scott.