is it possible to chage the resistance on the shifter gates?
 

I know some people do this on the audi s4. they remove a plug and a spring and replace it with a stiffer spring to make the shifter return to center more aggressive and makes it easier to shift fast and not miss a shift or money shift.

I have a 6 speed in the car now and I noticed several "plugs" that likely serve the same purpose. so If I knew which one was for the reverse I could add a stronger spring to make it more difficult to get into reverse. my car is a track car and I'm having a bit of a hard time with 5th and 6th so if the gate to reverse had more resistance all would be well.

any ideas? how is resistance on the gates controlled?

There are two plugs on each side with what I assum are springs pushing on pins. Open it up and look.