I have "heard" that it can be worse as a youngster, or "develop" as they get older. My bee had a slight wobble about the first two weeks we had her. Most noticeably at feed time, she would bobble before striking. And the first two feedings, missed on the first strike. Haven't seen it since, and she's almost a year old. And dead nuts on striking now too. I think it was brought out by the stress of a plane ride and new home. She also, is the sweetest snake in my collection. It doesn't affect her ability to eat, or be happy and healthy at all. There are varying degrees of wobble as well. I love the spider gene.
Oh, btw, she is a stellar eater. Never missed a meal. Not even when she is pink headed into shed.