Hello guys.
Replace rear wiper blade with PIA and bend the arm a little bit towards the glass, seems made it worse..now it doesn't touch the glass at all.
any idea?
should I replace the whole assembly maybe?

 

My front LHS wiper had a similar issue, it'sbearing had worn resulting a lot of play. So I took a thick 1/2" tap washer, cut a slit in on side of it and then slid it in position. This kept the wiper blade on close contact with the glass and also got rid of the loud "clunk" it made as it changed direction.

Perhaps the rear mechanism suffers the same wear issue?

It's a cheap and lasting fix, still going after several years!