It took me about 2 beers(20min for the rest of you) to do the swap. 2 capture nuts (very similar to the axel nuts, take your time on bending the stake out of position) remove all the parts 1 at a time and stack each side as you pull it out on top of the proceeding part). Swap gears, reassemble in descending order as removed. Tighten the capture nuts to the same place that it was staked at and re-stake. Seal the cover with ATF resistant sealer and let it sit until it dries. I could teach my dog to do this!