IRing Response Pads for Shooting Star

I been having my fair share of yoyo “mechanical issues” lately. One of my response pads fell off my shooting star today. I popped it back in and it fell off again. I just put it in again but it’s probably gonna fall out again I think. I read you can use glue but I’m probably just gonna buy new ones. There are 3 types of iyoyo iring response pads, soft medium and hard. Is there a particular one that is best for a shooting star using it unresponsive? Hard seems to be sold out. I also have an iYoYo passion that I mostly use responsive so I might buy two pairs. Appreciate if someone can tell me what type of hardness/softness I should pick between for both. Thanks!