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SlushGotta turn those dins up. Happened to me all the time until I cranked my dins to 14, also shorter/softer skis helps
Greg_Khttps://theskimonster.com/blog/posts/how-to-adjust-your-marker-ski-bindings/
Usual suspects to pre-releasing bindings are forward pressure or toe height/AFD not set up properly. If still releasing, then make sure your DIN is properly adjusted for your size/ability. Test again and if they are still pre-releasing then try increasing DIN higher but in small steps.
Follow the link and check if the forward pressure and AFD/toe height is adjusted properly first.