I'll check the girls tonight, I think most of them have the older style m16 connectors with just the thread running along all of it. That may also work instead. Best of luck with the plumbers tape solution, The Doll House are very expereinced with these matters :)
@DoubleD No worries :) Yeah, I didn't notice as much head bobble / noise on the fully threaded m16 connectors. With a mix of different doll brands (WM, JY, Kimberdoll and Jarliet) I'd be interested to know how the plumbers tape fix ends up for you and your waifu though :)
@kaede_waifu Thanks! I've not tried it yet, but I'll post when I get time to try the Teflon tape.
@kaede_waifu Thank you.