Just picked up a 1970 Sweet 16 off Gunbroker that looks like its never been out of the box. It's got a modified choke. My ffl says he can send the barrel to Briley and have them put an invector choke system in it so I can shoot IC. He will do this at his cost. Would that be a mistake? This gun looks new, and would that affect the value and originality of the gun. Maybe I should shoot the thing and leave it alone. Any thoughts out there on that.