Using your Cobb double - adjustable short shifter is easy. First, follow the included installation guide to install the shifter. It requires intermediate installation skills, so if you're not confident, you may want to seek professional help. Once installed, you can adjust the height of the shift knob. You can set it 1' higher or 1' lower according to your preference. To adjust the shifter throw, you'll need to cut the trim ring first. After that, you can make the throw 10% longer or 25% shorter. When using the shifter, shift smoothly and don't force it. For maintenance, keep the shifter clean. You can wipe it with a dry cloth regularly. Check the screws and connections from time to time to make sure they're tight. If you notice any unusual noises or problems during use, stop using the shifter and check it carefully or contact customer support.