ok I just rechecked in good light And now I know what 3mm is ,lol so the only one that seems like maybe 4mm is my lower left molar just in front of the one I had extracted over a yr ago. So I didnt have a wisdom tooth there and the tooth in front of the wisdom which I think is the 2nd molar was extracted, so its between the 1st molar and the one in front of that. That 1st molar has some gum recession which it has had for years. Its hard to tell how far the floss goes down w/o forcing it because if so dont have the floss level side to side it looks like it goes down further but if you get it level maybe 4mm ??
The other if you hold the floss level maybe 2mm, not much at all.

So...what if anything should I do ?? I floss daily ( usually ) and lightly brush my gums. I use Toms toothpaste with Xylitol and Sensodyne sometimes. My teeth have like NO tarter or buildup. I dont smoke....