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/