Slow-bow gave you the best solution to your problem.Once you learn to use centershot to tune your bow all these little tuneing problems many seem to have will go away.     jmo

I like all the ideas mentioned. Try a combination of them. Maybe get a piece af steel rod from the hardware an make a slide hammer or will a .22 caliber cleanining rod fit? The freezer has work for me on other applicatins. And tuning an arrow to the bow, can teach you alot about your shooting, and make you a more versatile shooter! Good shootin, and keep us informed on what works for you, Steve

I've had good luck removing inserts by using a chainsaw file that will fit down the inside of the shaft and swinging it so that it acts like an impact driver to knock loose the insert. I've only had a couple that I couldn't get loose using this method.
Sometimes it takes 20 or more whacks to get them out, but it works most of the time.

I bought a small steel rod that will fit down the shaft of my FMJ's and use that to bang out the insert once I've heated it up.