Repair my KORG KRONOS 2 buttons after damage

Hi ! I damaged my KORG KRONOS 2 (88) - it fall down from stairs. Now I would like to buy 6 pcs rotary knobs (#2951), 2 pcs slide potenciometers (#4005), Potenciometer rotary 6 pcs(#3178). I already put all tems into my shopping list, but I am not able to send an order to you. May be is it possible only for dealers ? I am not dealer, I am only simple fysical person. How can I order mentioned spare parts for my workstation. Thank you very much for your advice and help. I am from Czech republic. Jaro Zigo