any ideas to reduce friction or noise in these drawers?

they are metal rail on the drawer and the desk, theres a bit of pull/resistance and noise that i would not expect, after building 6 items with multiple drawers and no issues.

drawer - https://www.ikea.com/ie/en/p/konstruera-drawer-without-front-white-50436778/

used in this bed/desk combo - https://www.ikea.com/ie/en/p/smastad-loft-bed-white-blue-with-desk-with-4-drawers-s59542637/#content