All I can say is persevere, try to line the prey up. I know it's not as simple as that as the wobble can cause them to go in the total wrong direction! Keep the prey on the tongs in the same place and maybe lower to the floor? I found this helped me with a BP who didn't seem to strike correctly.

Has he eaten at all for you? I have a spider and a bee, I thought the bee may have a wobble due to the way he lay once (with his head upside down) but he didn't seem to wobble at all in feeding so I'm not sure. My spider had a head bob but I was wiggling the mouse up and down so it was either a wobble or he was following the mouse's movements.

Let us know how he gets on!