Limbs on a rig keep sizing up

[AlbertsSoup (poopfart thug)]

You can write your topic however you want, but you need to answer these questions:

1. What do you want to achieve? Keep it simple and clear!
   A functioning rig, which has an upper and lower jaw to it.

2. What is the issue? Include screenshots / videos if possible!
   The head meshes are scaling way bigger than the original size for no apparent reasoning.
   

   
   (in studio)
   
   
   (during testing)

3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
   I’ve tried looking through the forums, but found basically nothing.
   After that, you should include more details if you have any. Try to make your topic as descriptive as possible, so that it’s easier for people to help you! T
   The head meshes were modeled and imported from blender.

[1x1_Scripted (kodamaa)]

Probably not the issue because I’m not entirely sure on how it works, but is it anchored? Again this is probably not helpful nor of your use haha.

[AlbertsSoup (poopfart thug)]

It’s not supposed to be anchored, because then it would prevent the rig from moving.