Have recently developed some small chatter on my X axis.
The chatter only happen when moving from right to left, left to right is smooth. Y and Z axis are smooth.
Also using Dewalt 611.
Think it might be the Vwheels?
The search function is your friend when it comes to this issue. I can verify that from experience.
Most x axis chatter comes from one of two sources.
Flex in your y axis rails when cutting in +/- X-axis
Flex in your z axis slide assembly.
Both can be remedied with upgrades to stiffen the offending part of your machine.
My X axis chatter improved dramatically when I upgraded to 9mm belts