I've noticed a big difference in how a bike feels based on small contact point adjustments. Forgive me if I sound like a Roadie, but I really believe this.

Do you have a bike with contact points that fit you very well? If so, make some measurements and try to match the Marinoni to that. You should at least get to an acceptable position.

I found (no flames please, it's MY experience) on my Mondonico that moving the saddle back 2.5 mm (yes, you can measure that if you're careful) made it feel as "at home" as my Woodrup. How did I know to move it 2.5 mm? I dropped a plumb line from the height ofthe saddle to the center of the pedal spindlewith the pedal forward (3:00), and measured the setback from the string to the saddle nose (both bikes have the same saddle. Difference was 2.5 mm, due to having changed cranks from 170 to 172.5. After readjusting the saddle height and setback once more, I rode and found a happier butt and legs.

What dimensions to match?

1. saddle height, top center to spindle of pedal
2. saddle nose to plumb line, plumbing either to the BB or the forward pedal spindle.
3. saddle nose to front of each brake lever.
4. saddle nose to front (or other repeatable point) on each brake hood.
5. drop from top of saddle to center of handlebar.

With all this consistency, the same saddle tilt (nose-up or nose down) should work (and for me it does) for both bikes. I can't say if this will get the Marinoni to fit like it did, but it should make it fit as well as the other bike.

Again, in this process I found millimeters matter, and that it takes some consistent methodology to match them up.

Road Fan