Be very careful about applying heat to remove inserts from carbon arrows. You heat the field point and allow the heat to flow into the insert. Too much heat and you'll melt the end of the shaft. Heat a little, then grab the point with pliers and pull. Heat a little and pull. Heat a little and pull. Eventually the bond will break and the insert will pull free. If you're lucky, it won't be covered with black resin. If it is, you screwed up.

For the ones that haven't pulled out, I'd leave 'em alone. On the ones that have pulled out, you can easily install the inserts yourself. Run down to the nearest hardware store and get some 24-hour epoxy. Not that 5-minute frogsnot epoxy, the good 24-hour stuff. When you get those new inserts, epoxy them into place. They won't pull out again.

I like taking a toothpick and smearing a thin coat of epoxy inside the shaft, then doing the same on the insert. Then just stick the insert in the shaft, place the face of the insert on a good, flat surface and while holding the arrow as straight as you can, push the arrow straight down on the insert.

I've got a broadhead I KNOW is straight that I put into the insert. So, I put the arrow in my spinner and make sure the insert is straight before the epoxy can set up. Then I cross my fingers, hoping it stays straight while the glue cures.

Aluminum arrows and hot melt glue are SO much easier to work with.