Ok fellas, I measured the plastic tube at your request. I must like you guys to do this in the dark at 1100pm after a really long day.
I measured mine at just shorter than 2 1/2". Again, this will
be dependent on how high-up you raise the cable.
However, it does seem like there is a bit of leeway for this though. I had a lot more threads I could have tightened the knob on. I just barely snugged up the knob because the first time I ended up screwing the knob too far and ended up pushing the cable back down the stick making the throws longer albeit not by much.
Again, I hope this helps you guys. Any questions just ask.