Thank you all for your help, guys.
I DO want to just handle this myself, if possible.
I looked through the pic heavy atomizer rebuild thread and I see that the bottom of the 510 pin has a slot for a flathead screwdriver, but mine does not.
Suggestions for removing it?
View attachment 469815
Got it apart and got the broken post out.
Unfortunately, my spare post is a short one and is the long one that broke.
I'll have to get a long post from Rob.
Thanks for all the help, everyone.