Ender 3 V3 x-axis is uneven

New member so please excuse (and correct me) if I violate forum protocol. I just received my Ender 3 v3 Painter. Set it up and printed the 13 minute Benchy. Surprisingly good quality considering my neighbors thought there was an earthquake… It really, really shakes. I’ll try to do something about that. I then closely examined the printer and found that the x-gantry is not level. The left side is about 2 to 3 mm higher than the right side. I’m amazes that the Benchy even printed with that much unevenness. I’ve done a bunch of web searching for a fix but found nothing. So I joined this forum hoping some one here might have some solution to my problem. Can anyone point me in the correct direction to fix this u-level x-gantry? Thanks so much for any assistance. larsord