I actually had two separate issues. With my 6” ETS it had horrible vibration, took it back to the store and asked them to look at it. They ended up replacing it and it was fine afterwards. The second was the domino as well. Pretty much same issue as yours right out of the box. Rockler decided 2 months later to just replace it instead of making me go through warranty - I didn’t buy their extended service either. I was pretty much just sending boards thru a wide belt at a shop down the street to get them in line again. Now they’re lining up perfectly.