Ducati 851/996 4 valve desmo

This kind of desmo has the following characteristics:
DOHC 4 valve desmo.
Belt and pully driven camshafts with conjugate cams.
Valve angle 40 degrees.
This model (made in 1992) is from the horizontal cilinder.
[In the model the excenterpully is situated in the center]
The parts (camshafts, rockers, valves, opening and closing caps and smaller/thinner race springs) are all a gift from the Ducati-factory.
Used in this model but not included in the gift: Bearings, pulleys, belt, valve guides etc.
Specs: Black camshafts (code A1) with only one hole in the opening cam.
Inlet valve 37 mm. ; outlet valve 31 mm.
First generation closing caps.
Little closing springs not used in the model.

(Classification = Group 5)