The restrictor orifice is completely drilled out to allow maximum oil flow to the rear servo. We were more concerned about getting enough oil to the servo, not the harshness of the shift. The rear servo will go where the red grease is on the housing, and should be bolted on and checked to see if it will be depressed too much with the rear band. Since we had a brand-new band, it was pressing the rear servo pin and applying the band when the servo was bolted in. The pin was slightly ground down on a grinder.