I would have to ask which version of the shooting star do you have, there are more than a couple, I have had 2 of them, the original one Bear was selling (with the rotating manifold) and now the newest version from UltraMolds. Do you have the base plate with locking brackets? The only time I get bubbles in any baits is when the plastic is too cool in the pots and when the o-ring on the nozzle is about to fall apart.