Problem with sliding wardrobe doors

[Tia4]

They keep banging together noisily if we forget and slide them a bit too quickly! I tried using felt pads down the side at intervals but it doesn't seem to have helped much :(

Any ideas please?

Tia

that happens to us if we do push them too quickly or too hard - they are actually jumping off their tracks and thats what makes them bump together. Slow and gentle is the way to go and the problem will go away all by itself