Not sure what the rattling is
Note sure what my rattling inside is but it is noticeable. Hopefully they will tell me what it was once they open it up. I could have opened it myself but didn't want to take the chance to void my warranty.The SD card slot on the ST16 could be a bit out of alignment with the ST16 plastic shell. Not really a big deal at all. Early ST16,s did have some loose fan to fan shaft issues,but haven't heard of that being an issue anymore.