All I can say, those snakes won the lottery when you took them home !!
Since they are eating well, they will shed for you soon. I bet you after that shed or another one after that, those snakes will be gorgeous and just brim with good look and health !!
The wobble might subside in time and with the snake getting healthier. I still believe it was probably due to husbandry, either over heating or chemical treatment. As long as she eats and thrives, it won't really affect her much.
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