Haven't been on this site in a while, went back to archery. I would like a little help with a MX3. The top single doesn't fire occasionally because the cut for the lip on the shotgun shell was cut to deep, and sometimes the firring pin loses energy pushing the shell forward. At least that is what Lucho at Parrazi USA in LA says is the problem. If the O/U barrels didn't work so well for sporting clays, I would have sold the gun years ago. Since I haven't shot the gun in at least 5 years I plan to send the gun in to fix the problem and then put it up for sale. My question is first who to send it to and second should I have it re blued to help sell it. How much are these selling for? Thanks in advance for the help, Rod Richardson