Excellent Point chrimsun. Another trick is to slow your metronome down to about 40 - 50 bpm and play scales in different groupings, e.g. 1/4 notes, triplets ,1/8th, 1/16th. With the metronome this slow, it becomes VERY difficult to maintain concentration, as the tendency is to rush. This technique really helps you play with patience and lock in on the beat, Everyone should try it.