Third Gear issue, I know someone had a list going. But keeping the YES in place keeps that expense out of your pocket lower. But when its gone just be sure to do solid shifts, not power shifting into third.
TenTwelve, lifters dying, semi-syn oil (basically yamalube) staying in the heavier 20/50's. I know some on forums like lucas added to there oil, I haven't needed it or use it as my regular day... but I love using Marvel Mystery Oil few ounces every few tanks of gas, and as my winter gas stabilizer... keeps gas good and carbon off valves. Good Luck with the valves.