ya, that ax5 trans is just no good. you can replace parts in it, or upgrade. i'd change it, many people fix those transes or replace them quite frequently. the best thing i've found is getting a bell housing out of a dodge dakota, because it used the ax15 trans, which is stout, and use an ax 15 instead of the ax 5
i went and found the link for a good write up and info, even though it should be stuck since this comes up every few days.