Some of my bobbins are not winding tightly when I use the bobbin winder on my industrial Juki. I know I purchased the correct bobbins, but some of them do not sit snug on the winding pin (i.e., you can set the bobbin on the pin and spin it fast with your finger, totally not fitting snug), and therefore are not winding tightly. Is there any kind of adjustment I can do to the bobbin winder so these bobbins fit snug?

Sewing Machines - Juki - DDL-8700