An apparatus and method for forming a HSG silicon layer on a capacitor lower electrode of a semiconductor memory device. A single instruction is decoded. The coupler head has preferably at least one notch for a predetermined folding of the coupler head housing. The method includes predicting a first cycle time indicating a time duration that a part is disposed in the first manufacturing cell. The lower casing of the actuator assembly includes a wall defining a portion of a balancing cavity that receives the balancing system and an inner surface that ends at a shoulder and has an annular groove formed therein that receives a portion of the diaphragm as the fluid regulator moves from a fully open position to a lockup position.