I built basically an OX system. What I'm finding is with some bit types and certain directions I'm getting a poor quality. In particular, I just got an Amana tools bowl bit that when pocketing when moving from one direction to another it seems to "bump" up a little so I get a ridge along that transition as the bit clears the pocket. One of the 4 direction changes is far worse than the other 3 (square pocket). My guess is deflection somewhere in the machine when it performs that particular direction change with that bit. Question is, what is the best way to try and identify where that is coming from? My gut is leaning towards the Z-axis wheels but not sure how to check for that. Any guidance would be great. The attached photo is an example. The really bad part is marked in green and the direction of the cut marked with the red arrows. Chris