To help reduce the sticking effect during tool opening.Check the surface finish requirement on the side walls of the Parabola’sThe higher the polish = higher stickingRequest that all flutes, and side walls must have draw polish with 1200 paper finish.If steel on side walls are kept with technical polish (paper or stone) no diamond paste then the sticking problem will dramatically be reduced.Ask Varroc to change surface finish requirements and update the drawing to reflect the change.