Note to all: when / if you need to machine down the lower triple clamp area on the Marzocchi Shiver tubes to make them fit into original Xchallenge triples, be careful not to overtighten them upon final installation.
10Nm is adequate torque for the lower triple clamp bolts. More than that, and you risk squeezing the machined tubes too much, resulting in stiction and general shitty behaviour. On the top triple clamp area, 25Nm should suffice, and it's not that critical.
(and I have a set of RXV Shivers coming in, too - building a set of forks for my friend's X.)
Stable: BMW R80 GS -90, BMW G 650 Xchallenge, KTM 690 Enduro R -12 // finnduro.com