Hi. My Jap 2015 RAV4 manual adjusting seat doesn't seem to hold vertical height very well. Over time (maybe a week) the seat eventually goes down to lowest position and starts to make clicking sounds when the car is in motion. Once it goes to lowest position, it sounds like there's something loose dangling inside the seat or panels. Is there any fix for this kind of thing? Is there anything that can be easily opened up on the seat to check if anything's loose? Thanks.