An amplifier system with feedback current cancellation comprises an amplifier with an input, an output, and at least one stage. Such methods include the insertion of a protease recognition site that is recognized by a gut protease of a target insect, such as corn rootworm, into at least one position of a Cry3A toxin so that a modified Cry3A toxin is thus designed. Methods for producing a maize plant that comprises crossing hybrid maize variety X95D076 with another maize plant. A pusher button slidably disposed in a pusher cavity in a vertically movable manner.