Throttle cable stretching

I feel silly asking this, but here goes...

I have less than 1000 miles on my WRR still (*sighs* don't ask), but already the throttle cable seems to be stretched a lot. Before I modded anything, I had to adjust the long screw adjuster (on the cable) to a point where the rubber cover no longer seals it closed. I then installed a Zeta aluminum throttle tube and had to make yet even more adjustments. Right now, the long adjustment screw is nearing the end of its adjustment range.

Does this seem normal?

If so, what is the proper way of making a "larger" adjustment so that I can get my long adjustment screw back into its range? At the throttle body under the tank?

Mr.Metal wrote:

what is the proper way of making a "larger" adjustment so that I can get my long adjustment screw back into its range? At the throttle body under the tank?

Yes! Assuming it's the same as my Triumph.