Hi, I am in a trio with a working cover band. On some tunes the drummer is right on and on some others he is either too fast or more likely too slow. Is making a drummer play to a click an offensive thing to do? Could any of you who had experience in this situation advise me on what to do about it? I like the drummer as a person and he is pretty damn open minded with the material we choose to play. I'd hate to have him be let go over something that a $50 piece of equipment can resolve. Help!