ᐅ Which replacement parts are most important for Malm drawers?

Hello everyone, I recently got a Malm chest of drawers with several drawers and have noticed that some parts need replacing. Since I want to do the repairs myself, I’m particularly interested in which replacement parts for the Malm drawers are most important to ensure smooth operation. I’m thinking of wear parts like rails, rollers, or handles, as well as specific small components. I’m especially curious about which parts tend to break most often and which ones are best to keep in stock to quickly fix any issues. Thanks in advance for your experiences and tips!