Well hello everyone!! I am thrilled to see that this is still a hot topic. It is my pleasure to have helped my fellow TC family. Granted this did not cover nor could it cover all of the models produced but it sure gives you a good place to start. After many years of YouTube and such, this was and still is an easy find here on our own forum. Jacks will fail not if but when it is the worst possible time. Keeping them maintained with re-lubrication and free of moisture will give you a hassle free experience. No one expects a fail, but fail to plan, plan to fail. Thanks for the shout out Old Islander..