peteroznewman
Bbp_participant
It's good that your model is using Displacement to move the bulb down. has some good suggestions. Here are some other things that you can try.
It looks like the solid bulb is a rigid body. Try using smaller elements on the solid bulb surface.
You don't show the tip of the bulb. Is there a radius on that? There should be.
Finally, try using a different Detection method: Nodal-Normal to Target.