Fuel Injector hat in the Manifold

[zoemayne]

I'm pretty sure I have an injector hat in my manifold. I have an Impala 00. All of the fuel injectors came out except one of them was missing the O ring and hat. So I'm about to wrap up this intake manifold job and I find the O-ring at the top of the hole. I have a vac and I'll probably try it along with a hanger to get it out but to take the mani off would be too much!!

A) Would it melt away?

B) How can I get it out tools recomended?

C) Can I just leave it in?

I already noticed that the injector was missing the O-ring and injector top/hat but I forgot to retrieve it while I had the manifold off. I replaced the injector with a new injector cause that hat isn't sold separately as the O-rings are.

00 3.4l 120K miles

Heads just done
Only/Main thing left is the upper plenum.

Decisions opinions?