I have two young students whose 5th finger tends to buckle if they play loud. Their 5th finger seems to have almost no strength at all and they have to rely on manipulating their hand position to play the 5th finger (leaning to the side) which is quite worrying for long term development. What do fellow teachers have to say about fixing this problem? I don't remember having this problem when I was learning, so I'm not too sure how to best guide them on this.