I'm trying to restore my Pb handlebars and started to remove all the items. I got to this point and I'm. It sure how to remove these. See photos. Any help would be much appreciated. They look like metal hollow dowels.
let it soak in pb blaster or wd40 for a while. i found a torx driver that was the same size and was able to smash them out with a hammer. then very lightly sand/clean them before putting them back in and they should go in easier.