I see lots of chatter about the ring gear being riveted to the ring carrier in a G rear end. I see bolts in mine. One of the bolts is broken and I found it in the bottom of the case. I'm guessing probably over tightened when installed by someone at some time. Rather than split the tractor to replace the one missing bolt, there's about a dozen left, I'm thinking it will be OK for parade, grandkid and tractor ride duty with one bolt missing. The bolts look pretty professional - appear to be high grade, right length, with castle nuts and cotter pins. Did production ever use bolts instead of rivets?