Problems with Speedo cable

On a pretty comprehensive link that I found in a search on this board there is a reference to what is called a flick test to determine the condition of the inner cable itself and mine seems fine. This same article says that there should only be 7/16 inch protruding at the speedo and I have a 9/16 inch protrusion. The article calls for a 5/8 inch protrusion at the drive and I have 1 3/16 inch protrusion. This speedo had been working fine up to now so is it possible that the extra length at the drive end could cause my problem? Do these inner cables increase in length with use? If no...