"I haven't had any problem. Just take your thumb or thumbs and place them on the little traction bars. Then just push down into unit and in the direction of the arrow."
Great Advice Johnny, and my experience with the slider too.
As for the magpulser, I'd like to source the schematics and plans for this device, and if I do, I'll post them, or hope someone else does, here, and to the Zapper or Beck Forum Images Folder...