Nice work. Nice tool.
I think there is a silicone O-ring that works with the spacer/seal surface.
Be sure to replace that.
At least there is on the '02 Adventure.
'02 KTM 640 Adventure-lowered
"On the road there are no special cases."
Cormack McCarthy-The Crossing
The faster it goes the faster it breaks.
And high performance=high maintenance.