I just joined the Ridgid Forum, and enjoy reading all of your posts. I just purchased the Ridgid 18V model RR9631 X3 5-piece combo kit from Home Depot and want to register for the LSA online. My question is regarding the serial #'s on my tools. Is the serial # the ENTIRE long list of letters and #'s on the tool? My tools start with "CS" followed by 9 numbers. Is the serial # the whole "CS1234 56789"? Or just a certain portion of that set of letters and numbers? Thanks!