I should also mention that when I sit, the symptoms are very light in intensity and then gradually increase the longer I sit. They will almost go completely away if I stand up and walk around. I can also sit in one chair and have very light symptoms and get up, move to another chair and have much worse symptoms. Some chairs are great, others are not! So it’s constantly changing all day.
The bulge at L4/L5 is also centrally located.