Tiered cuts in profile mode

I have been using SO3 with carbide motion and cambam for a year and love it! I have hit a snag recently. I was cutting a board with an arc on the end and instead of getting a straight profile I got a tiered profile. The top cut was fine but each one after that was off by the cutter diameter. My belts are fine, it only happens in the Y direction and is consistent with the profile command. Ant thoughts are appreciated.
John Ogren, ABQ NM

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Let us know material, feed, speed, and direction?

Check V-wheels and pulley set screws?

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My pulley set screws are missing…
Getting new set screws in the meantime on to other projects