if the tri-ax is on a t45(aka your new 96 cobra) it's most likely the trans. not the shifter. but, the tri-ax shift stops ARE adjustable. just pop off the shifter boot trim, and you'll see the 2 bumpstops.
back them out of the shifter housing and put the car in 2nd gear. screw the stop in til it touches the shifter, then back it out 1/2 turn or so.
do the same with the one at the front of the shifter with the car in 3rd gear.
wa-la. done. a 5 minute job.
i just finally broke mine completely today.
before it would only go into 2nd gear about 40% of the time. it was like that for 2 years.
now it is STUCK in 2nd gear.
It's out of the car and going to a rebuild shop on Monday.
Sucks that it broke, but it needed to be done for the longest time.