I don't have much trouble with switch ears, but for knock-outs I do a couple things. One is using an old screw-driver, which I set on the knock-out & give it a whack with a hammer (this works so much better than free-swinging needle-nose, or lineman pliers...I also use this screw-driver for tightening nuts). That keeps the 3/4" in while taking out the 1/2". On larger holes, I take out the 1/2", then use my Slug-Buster (hole punch)to take the rest out.
Dave
