jfg - the wedge pins should come out fairly easily. I don't know what you mean by buggered up. Perhaps a pic would help.
The wedge pin is simply a piece of brass that has an oval or rectangular head about 1/2" x 1/4". It is about 1 - 1 1/4" long and flat (the flat portion is about 3/8" wide x 3/32" thick). and has a hard taper on the end. (Sort of like a tiny log splitter)
I don't know why anyone would have intentionally flattened the beveled end unless they didn't intend on ever taking them out.
Did you get them out far enough to remove the barrel? Did you get them through the one brass oval screwed onto the stock that it goes through? If you got it through that it should go through the mating slot under the barrel. I suggest that you take the two little screws out of the opposite oval that the wedge pins go through and then finish removing the pins. This way you won't pull the screws out and strip the holes in the stock. Then reshape the bevel on the wedge pin with a file. Let us know it you need some more help.