As the title and summary imply, there is a special tool required. Please go to the attributes if you haven't figured out yet what it is. The final three digits for north and west coordinates are hidden at the given location. I had to move Stage #1 some time ago. Erg the final might be 10 - 20 feet off, depending on the device you use.
Please note the final location does occasionally have limited access. Sometimes in the winter months, a gate closes the entrance. Not always and without much consistency. But it's possible.