Thanks for the response. So your factory line is the correct location for an average size skier (I assume male, so 5'10", 180 lbs). And if someone has a personal preference, then move forward or back from the line. That is where I thought you were coming from. From my own personal experience I would add: if you are larger than average, move back due to a larger boot size and if smaller than average with a smaller boot size, move forward of the line.
The way I interpret Graham's post is he is asking what the factory recommend mounting point is? I think the answer should have been "use the factory line" on this ski. He is coming from posts that your factory line on other skis is not the best starting point. I think there were posts about the proto Citadel that said 33" from the tail is the best mounting point for an "average size skier". I may be wrong, but I don't think Graham decided -2cm was good for him and he was actually asking where should the "average skier" mount position be on this particular ski. He was asking for confirmation that the posted number of 33" for this ski is still correct. And I think your answer for this production ski is "the factory line" is the best starting point, as there have been changes on the production ski as compared to the proto versions. He is mounting movable bindings and wants to know where to center the boot before moving forward or back.
Graham, was my interpretation of your first post correct?
Yes. Looking for a jumping off point. 33" from the tail is the -2 mark .Others on this thread have mentioned it. Just wanted confirmation.
Gotchya - sorry! Where do you ski most of the time? Skill level?
Advanced skier. I will be using these out west for the most part.