I've got a leak around the forward end of my worm gear. I suspect its probably the quadring. I've looked at some drawings of the upper online and they don't show the assembly of these components. I was wondering if anyone had a link or could explain this assembly so I make sure I putting this thing back together. What I've got from front to back on the worm screw is: snap ring,steering gear, plastic washer, quad ring, bushing, roller bearing, four flat washers, roller bearing, bushing, retainer, quad ring and cover. Can anyone tell me if I'm missing something here?