Went to the range today with my blackhawk 44 mag 10 1/2" barrel. Shooting good groups, after about 100 rounds the hammer wouldnt cock. Upon investigation It was found my transfer bar broke and was jamming the action.Removed broken part, hammer works fine. Is this something I can replace or better off giving It to Ruger. First firearm ever to break. Is this a common problem with ruger blackhawks, ? firearm approx 15 years old.