My brother has a rock shox pearl 3.3 air shock that seems to leak down air after a couple of days. We can go ride all day and it holds air fine until it sits for a few days. I told him to get the shock in the first place because everything I have found said it was a set and forget shock. I cant seem to find any info anywhere else about these particular shocks leaking down so I was wondering if anyone on here has had any experience with this or have any pointers of where to look. Thanks in advance