spider wobble

I have two spider females when I first got them they were around 150 grams no visible wobble at all not even when feeding. They are both over 1500 grams now and both have wobble to some degree. It developed over time and sometimes it seems worse than others. Neither one of them wobbles very bad but they both definitely do. I mostly see it while feeding and sometimes when I'm cleaning their tubs. With mine its more of a twitchy kinda bounce of their head when they are excited they don't really corkscrew.

The wobble can be anything from a very subtle tilting of the head (sometimes unnoticeable) to the "train wreck" corkscrewing. Every spider has it to some degree. Mine has gotten slightly worse as she grew up. As a baby she barely ever wobbled, even with prey introduced, and now even if she thinks she's getting fed she starts shaking her head side-to-side. Other than that she's fine, and I really have no problem with the wobble as long as it doesn't affect how they thrive.