1. Check for a dull, burned or chipped cutting edge.
2. Be sure the coolant is reaching the cutting edge during the cutting cycle to remove chips and heat.
3. Be sure the tool is on-center with the bar stock.
4. Be sure the finishing tool is not required to remove more material than it is designed to handle.
5. Be sure the correct speed and feed gears are installed.
6. Check to see that the correct Cross Slide cam is installed.
7. Check for flat spots on the cam roller.