If in the Necsiya of the deflection from one side the air has become much worse than the other, the problem is likely to be an untightness of air ducts. The most frequent deformation of the air duct at the point of connection with the other duct, and most of the air does not reach the salon.
To solve the problem without replacing the air duct, it is necessary to find a plastic jar of the appropriate size, cut off the top and bottom part and insert into the connection the two ducts.
