A few people have, of course. I did it… but it cost me a lot of money doing it myself (I’m not mad… Completing the project was quite special!). I fried my first attempt as a result of inexperience, and cheap tools. You MUST have a decent microscope! You should also have solder mask and a good UV light, to hold both wires and flex cables in place. Otherwise, some of the solder points are so tiny, dropping your switch or vibrations in a car could break your joints. You REALLY do not want to have to open it back up to repair connections, once it’s put together and working.