Yes, painful to do... but you only have to do it once, and incrementally as stock comes in.Same as you.... probably worse....
With this system I know exactly what cabinet, row, column or bin, or shelf they are in. Painful to do- but every f'n day I'm glad I did it...
Just knowing exactly what I have, and where it is..... I sleep better at night
Once it is set up it is a pleasure to use.