i did this a long time ago. You have to cut off alot. You can never use them on any other deck after you cut them to fit this deck. I reccomend you just use spacers.
well then cut it down like quarter inch maybe a bit more so and then you dont have to use many spacers, but if you buy a new deck than u can still use that fork
don't cut down the SMX. you won't be able to use it anymore unless you rig an ICS set up, no starnuts will fit in it.
at least for me it failed miserably.