the rear wiper does not wipe correctly it skips on the glass going one way and wipes normal the other way but misses the top 2 inches ive tried 2 different wipers and tried to bend the wiper arm a little inward no change whats my issue?

 

 

I had the same problem on my old wagon.

Waxing the rear window helps with the skipping.

 

I had a problem with the center of the blade not making contact and tried bending the wiper arm. That helped a little so I figured the spring in the arm was worn out, but I never replaced the arm to find out if that was really the case.

I had that once and replaced the wiper blade (was a bit of a pain to find) but it resolved it.