tonight i was finishing putting my rear end together. brakes done. next was the axles. moser 28 spline. so i went and installed driver side first. wont go in all the way. oh yeah remove pin to slide axle in all the way to install c clip. next install new studs into axle. the axle slipped 2 times then i heard a part hit the floor. small spider gears fell out. i did not reinstall pin to hold unit all together. so my question is do i need to take apart the whole assembly to get everything back to working order. the unit has the metal s shaped spring holdind the gears and clutches in. 10 bolt 8.5 rear.