Wiper blades ....

[A-Dingo-Ate-My-Baby]

figured out the rear Trico exact fit problem:

The Trico exact-fit replica wiper blade housing is close, but not exactly the same
as the OEM. The length stop-to-stop is 3mm longer. The Trico insert has some
wiggle room side-to-side, allowing the far-end of the insert to float off the glass
when pressure is applied to the middle of the insert

I slid the Trico insert out of the Trico arm, installed the Toyota arm, and slid in the
Trico insert. The Toyota stop tabs touch the insert at both ends of the blade, and when
the arm is at rest position, the stops hold the insert and keep it from floating off the glass.

So, in the case of: should I get a new insert, or a whole new Trico exact fit assembly ?
say NO to Trico, or just get the insert.

Other companies may make a better OEM-fit blade housing, but Trico dropped the ball on this one.

I now have 100% rear wiper contact. crisis averted.