Short Lady Smith story ....
When the Model 65 LS first came out one of the selling points was the 'lightened trigger job' for the ladies. The factory original rebound springs for the K-frame had 17 coils. For the LS they cut 2 coils off to make it a 15 coil rebound spring.
So .......... the assemblers had 2 piles of rebound springs - one pile of 17 and one pile of 15. Employees got confused. Finally some efficiency expert said 'Let's install 15 coil springs in ALL of our K-frames."
And everybody lived happily thereafter.