Hello turners, I'm using my Nova chuck's worm screw to mount my bowl blanks (green and kiln dried wood) nothing over 6" OSD. My problem is unscrewing the bowl from the worm screw when turning the bowl around to work the inside of the bowl. The bowl is so tight on the screw I have a hard time trying to take it off. I do use one drill size smaller that the worm screw to mount the bowl. I do tighten the bowl all the way on the screw to where the bowl face is touching the jaws on the chuck. I don't use a spacer on the worm screw. Should I ? Also should I try using paraffin wax on the worm screw? I just don't won't the bowl blank flying off. I guess my question is how do you mount the blank to the worm screw to where it is not chore to take off. Several times I've had to loosen the worm screw from the chuck and put the bowl in a vice and use a wrench to unscrew the worm screw. I don't like to do that. Has anyone had this problem? I am really enjoying turning bowls and getting a lot of practice...... Thanks and Happy turning.