Mine was a fixed jet, but it shouldn't. You are going to need to be crafty. Tap it in just far enough for the bolt portion, then bore the center out of a new larger bolt and use that. I do remember that I took that jet out before starting but still had to be very careful that I didn't run the tap up far enough to mess that portion up. You will only be running the tap in just far enough to take care of the threads not go all of the way to the seat. I think I stopped just before it because the tap is tapered and I had to make sure it was opened up for the new plug.
I was so nervous about doing mine that I didn't bore it out and then tap it. That center pedistal is thin on mine. I just used the tap to make it bigger. The carb is pot metal and it goes easy. I also did mine with it right side up clamped in the vise so that I didn't get metal down in a jet somewhere I would never find it.