ROCHESTER — Consistency. It’s been the key word for Brennan Weckwerth, in his life and his golf game, for more than a year. The recent Rochester Century High School graduate has found that the more consistent he is away from the golf course, the more consistent he is on it. And no high school golfer in southeastern Minnesota was steadier this spring than the Panthers’ top player. After a 32nd-place finish at the Class 3A state meet on June 9-10 …