i reckon mount them at 1cm behind center
i ride my dumonts at 1cm behind center.
they go hard in anything!
I ride silencers and I ride about half park, and half groomers. I have mine mounted 2 cm from center. Theyre close enough to be easy to ride in the park, but it'll still let you ride pow pretty decently.
this. you dont want to center mount a ski that is not symmetrical. Silencers were my first twin tips and i had them mounted 4cm from true center for mainly all mountain with a little bit of park. When i got my chronics though i mounted them -2cm from true center because even though they had a symmetrical flex pattern the demensions aren't symmertrical.
Anywhere from -2cm to -4cm from true center should get you want you want out of the ski.
hope this helped