It’s likely not a bevel problem. Just got a lengthy/ informative email from On3p saying the following:
“Thanks for the email. While we typically don't recommend going that far forward, if you are used to center mounted skis plenty of people like them there.
Do you have just one day on them? If just a single day, could be as simple as the edges are just too sharp. I would ski them a few days before you do any remounting.
If by unstable you mean the edges just feel grippy or are pulling the skis - it can be basically two things. Low base bevel or too sharp. We had a small number of skis with low base bevel in the production groups in 2020 and 2021 - but haven't heard of a base bevel issue in any skis that were build going back around 15 months now, so I would suspect it isn't bevel and rather that just the edges are too sharp on day one.
In terms of feel, if you are feeling fine in a turn but on things like traverses or cat tracks the skis is wanting to grab and pull - it is because the edge isn't under pressure and you are getting bits of random contact that then drive one ski separate from the other.
We normally tell people that we feel the factory tune is too sharp by about 3 days of skiing - so if you are coming from skis that are pretty dutuned it can feel pretty stark. It is the point we've found we've gotten the least amount of feedback back, though (still too dull for some).
Someone on NS just went through this - coming off older pair of Kartel with dull edges, felt really hooky being on a brand new pair - and totally solved after about 2 days of skiing when the edge sharpness broke in.
https://www.newschoolers.com/forum/thread/933191/ON3P-Jeffrey-102-won---t-hold-an-edge
My guess here is it is likely that. You can speed that process along by just detuning with a gummi a bit to your need - or give the skis a few days of skiing.
If by day 4 you are still feeling that pull, let us know but I wouldn't consider adding new holes until then.
Being forward on the mount will make the sidecut a bit less locked in because you are sitting a good bit ahead of its transition, but not so much that it hooks and I think you likely are just seeing sharp edges grab the ski a bit.
Oscar is at the forward mounting line - so that is +2cm of recommended (so spot relative to center will alter by length, but -2cm in a 181cm). That would be the forward team line.
That said, there are a few team guys at +3cm of that line, so I think we should just check the edges - get sharpness right, ensure bevel right - before we talk about extra holes.”
ON3P with the best customer service in the business per usual!