If you are talking about pushing on the outside of the wiper trans to tighten the cables and it won't stay tight, then the wiper trans needs replaced.
I also use the boxing term "right cross " when it come to remembering which pair of cable are crossed to make the blades go in the opposite direction.
Try pushing in on the wiper trans end, release
and then pull on one of the RH cables under the dash to see if they hold or slip.
Hope this helps. You do have a shop manual for your car don't you?
ne cable to see if the trans slips.
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Any man that thinks he is too old to learn something new probably always was