Broiler delayed ignition

Brand: GE
Model Number: PGB908SEM1SS
Main Symptom: Broiler delayed ignition
What happens & when: When i turn on broiler hi, it takes about 3-4 mins for the gas to light. I hear a slight puff when it lights and a small gas odor that dissipates.
what exact parts(s) do i need to order to fix?
is there a description of the replacement process?

Error Code (if any):
Parts or tests already tried:
Photos / video link:

This is commonly caused by a burner jet being clogged or the igniter not being aligned to the burner properly. If the burner tube is thoroughly cleaned, does the problem persist?