it's possible, this is how i did it:
You have to lenghten the part that the red arrow points (blue line, distance)
Both the gear stick ant the gear lever has to be lenghten by the same amount.
Another picture (dont mind the welds)
Now the throw back and forward will be shorter, and ofcourse you can shorten the part that's in yellow, for the same amount that you lenghten the bottom part (or even more, so that the gear stick is lower)
Then you can do something more for beter shifting:
This is a very loose fit, and over the years it develops some wear and you feel that on the gear stick because it wobbles left/right.
I drilled half mm bigger hole and made new part to secure it together, it's a snug fit and the gear change is much more precise.