A method of adding optical proximity correction, OPC, to a base pattern is described. The knockout drive is reciprocating a knockout plunger to discharge molded food products from a cavity in the mold plate, the mold plate being reciprocated by a mold plate drive between a cavity fill position and a cavity discharge position. A contemplated compound is an -amino–sulfonyl carbocyclo, heterocyclo, aryl, or heteroaryl hydroxamic acid.