Kev's spacer mod helps.. I have 10wt Motul fork oil in my XTR..
Yamaha use very basic damper rod forks in the XT..
I had to build a set of adjustable valves.. made a big improvement..
I think the spring for the return/rebound damping is a bit heavy still.
The compression damping is adjustable by changein spring pre-load..
I will most lightly go to USD forks in the end..