Interior (seat?) rattle...

[Brian200001]

Hi folks.
New proud H3 owner here.
After a few days my H3 developed an elusive rattle that I can hear in the interior. Its not too loud but its there. I think it might be the passenger seat. I did notice that although the seat is not loose, there is a small amount of give with the rail that the seat rides on. I'm wondering if this is the rattle I hear. Does anyone else notice this? Can anyone else pull feel a small rattle when they pull on the bottom of the passenger seat? The bad thing is.. there doesn't seem to be ANY way to get at anything under the seat. There are also stereo equipment, etc. under the passenger seat.

Any help or ideas? Thanks.