By front left cv axle are you refering to the front drive shaft? Also dose it have the NV249 (full time 4wd).
If so it is the drive shaft that is causing it to roll in park. My wifes 95 had the same poroblem I got a new shaft that gets rid of the cv joint and puts a regular ujoint in its place. I would strongly suggest you get one that replaces the cv. They brake way to easy I broke 2.
Hope that helps