Okay, so I recently decided to start Mozart/Hummel Symphony #40, which starts with Alberti Basses in the left hand (with another voice that acts as an obstacle, see why), I went on with the first couple of bars and I found out that the left hand and right hand were not aligned and horribly out of sync. Its not with playing the alberti basses per se but having to play along with the right hand, flawlessly. I may sound ridiculous right now, but for the stiffness of my hands, alberti basses is the hardest aspect of technique for me, and I wish to perfect it, so please guide me as to how. Thanks in advance.