"I've been waiting for this set to come since 2018, and it finally came! Everything was so well designed and I'm very pleased with this set. However, there is one design issue. When you press the auto realign button, the motor rotates counter-clockwise and an orange piece hits a beam (which is supposed to happen). But when it hits the beam, the axle doesn't align exactly at 90 degrees, but a little over. This makes the keys on the piano go down just a tiny bit (for only some keys).
Solution: Remove the tan piece in front of the holder with the beam and replace with a 2 by 2 plate. The piece holding the grey beam should be moved forward by one 1 by 2 plate. Next, remove the rubber piece in the front. Then add 2, 1 by 2 plates and one 1 by 2 tile stacked and place in front of the holder that used to hold the rubber piece. This way the orange piece should align at 90 degrees, if not, only a few degrees off. Sorry if the instructions are not clear!!!!!!"