Actually I found out the very same thing when I replaced the chain counter. Mine was getting pretty bad with the the LCD readout. So when I replaced it I found the same issue. One of those thing easily missed during commissioning of a yacht I guess.
But It's better then the other way around, thinking you set out 30 meter and only doing 20!
BTW I'm having great results with the replacement of the Buegel with a Spade 35 kg. It grabs very fast and sits much better on the bow.