tbran Guest Sep 24, 2008 #1 For max performance, when the lip no longer has a 90 degree edge. Many of the Helicals can be flipped to give a new edge. Shimmed helicals or new channels will give much improved performance
For max performance, when the lip no longer has a 90 degree edge. Many of the Helicals can be flipped to give a new edge. Shimmed helicals or new channels will give much improved performance