I have a complete explorer rear and im pulling out the 3.73 ring and pinion to put in my fox. I dissasembled the fox 8.8 first with no problems. When it came time to remove the pinion gear from the exploder rear, it dosnt want to come out. On the fox rear all I did was remove the 1-1/16 nut and tapped it lightly and it fell right out into my hand. I was banging on the exlorer pinion pretty hard (piece of wood to protect the threaded area) and nothing. It's been soaking in PB blaster for a while and maybe that will help. But just incase, is there something else in the explorer rear that retains the pinion gear?