I've been having a little bit of a problem with the 4wd selector lever. I'm pretty sure I have a np231, it's a 95 cherokee 2dr sport. I'm curious if there is any info on how to maintain it? Sometimes it doesnt want to get out of 4wd, usually after I put it into 4low. It feels like something in just binding up in the linkage, it eventually comes out after a little effort. Also, it pops out of 4low and I've read that there is an adjustment you can do somewhere in the linkage. If anyone has any info, it would be much appreciated.