I have an LX2620 and want to purchase a workshop manual. There are, however, 3 version available (9Y111-29030, Dec 2023; 9Y111-29032 - jan 2025; 9Y111-29033 - sept 2025). Can anyone clarify how the publishing date related to the manufacturing date? My tractor was built, I think, in 2025 (the year I purchased it), though I'm unsure how to decode the serial number.