Body Comparison Inside an Older LittleFee Head - Connector Changes?

Hello! I have an older LittleFee and I'm wondering if they've changed the inside of the heads. This one is very hard to get the head off of and to restring the doll. Or maybe they've made some sort of new connector I can add to the inside to make things easier. Any information is greatly appreciated!



Thank you for all the help!

 

Boooo... Thanks so much for the info. I don't understand why the LittleFee heads are like this.