I ran into such a problem, someone touched the rear air ducts with the toe of the foot and a pin broke off at one guide.

That's what happens if it breaks off.

Repair process:
We pry here and take out the air ducts, they are latched

We take out the air ducts and carry them home

Next you need to unfasten the front frame

It's done like this

Pry the latches here

Pry the latch from the side, from the other side, the same

Pry the latches on the back, 4 pcs.
Next, I took an ordinary paper clip and cut off a 5mm rod from it. Then he heated the awl with a lighter and made a recess on the guide, where the pin broke off. Then he heated the rod from the paper clip and inserted it there.

Repair completed.
Source: https://www.drive2.ru/l/6659033/