1st things 1st @eaj71 ...and I hope I’m telling you correct scoop and I think I am. That’s not your acc pump. You’ve already got that out. The acc pump was in the larger hole at the bottom of your green circle.
I think what I would do would be to put that part of the carb in a bucket of Chem Cleaner or similar & let it soak over night and then try to remove it. Looks like you have already dinged the surface a bit attempting to remove it. Try letting it soak and see if that helps.
Prob not the end of the world if you don’t get it out, but I just looked at my pics of when I rebuilt mine 3 years ago, and I can see that I got mine out. Don’t remember any probs so I can’t help you there...except to let it soak and then try.
At least you‘re not in Ca. where you can only buy the diluted carb soaker. At the time I did mine, I had some of the old good stuff and also some of the watered down newer stuff and I could definitely tell the difference.
I’m anxious to hear about my carb FJ40Jim is currently rebuilding for me (I don’t have the eyesight to attempt myself). It was also sitting for a long time (18y) full of California Gas....18yo whiskey=Good, 18yo gasoline=Bad!!!