I'm changing a ring/pinion on a stock 10-bolt (I know) ratio of 3.42. I've removed the carrier and have the old ring gear off. The photo attached is the opposite side of the ring gear and syder gears. My question is....is this normal???? The center area has a depressed - almost worn where the axle enters the spyder gears. Can any one familiar with this provide any advice about the condition of this part???? HELP !!