Played around with it today, its not the bag itself, the sound is coming from one of the other parts, possibly the swaybar. Ill have a closer look tomorrow, if I have to i'll remove parts one by one until i can identify the problem. If I lower the psi it doesn't do it as much but still does it over hard bumps but i can't leave it that low as my wheels scrub and thats half the reason why I got the bags lol so i'll investigate and update on the cause of the issue