Bought a new S&W 686+ and finally had a chance to take it to the range. I found that one chamber wouldn't eject fired shells, I had to remove 6 by hand then use a dowel to remove the stuck shell. Looking at the chamber in question I found it has a substantial amount of scoring /rough tooling marks. 
How common is this with new S&W revolvers?
I hate to send it back so I looked at some alternatives; Brownells has a chamber polishing tool:
BROWNELLS : HANDGUN POLISHING SYSTEM - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools
Anyone ever used it? Or should I just bite the bullet and send it 3k mi to S&W and hope they fix it the first time around?

How common is this with new S&W revolvers?
I hate to send it back so I looked at some alternatives; Brownells has a chamber polishing tool:
BROWNELLS : HANDGUN POLISHING SYSTEM - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools
Anyone ever used it? Or should I just bite the bullet and send it 3k mi to S&W and hope they fix it the first time around?