90 XL mount

[quantz]

Now I have a small problem.
I mounted my 90 XL on a new 90 cone by Fotoman, provided by a Fotoman retailer.
When the lens is mounted (properly, it seems), I cannot turn the helical mount further
than somewhere between 2 m and 1,5. I cannot go right to 1,1 m, which is the minimum
focus distance. In fact, the rear element cannot move beyond, not having enough room
inside the cone to go all the way.
What am I missing here ?
Lens is very recent and cone is new.

[Steve M Hostetter]

it's not a cone for the xl version of the 90mm super angulon??