I have owned a Taurus 970 tracker now for about three months and have put about 1,500 rounds through it. Recently it has been binding up. It works for about 35 rounds or so if I polish the cyclinder between the breech face and the breech face itself. After a small shooting session the cylinder will not move unless I turn it with my hand. The cyclinder gap does look abnormally small compared to the S&Ws I am used to. I would appreciate it if someone could educate me as to the reasons for a revolver cylinder to bind up. This is my first revolver so I am not too familiar with them.