Start by cleaning the tracks with a rag to eliminate any build-up that might be interfering with your door’s gentle glide. Don’t lubricate the tracks, but ensuring they’re clean is essential to your door’s functioning. If your rollers have nylon wheels that make contact with the track, make sure to only lubricate the bearings without getting any lubricant on the nylon itself. All-metal rollers don’t require as much precision, but make sure to wipe away any excess lubricant