The two main causes that can induce reading leakage are:
A lack of shielding seal on the inside edge of the doors, or a damaged seal.
→ The seal must be replaced
The new seal must be installed over the full height of the door.
It must be installed as straight as possible, flush with the hinges as in the photo.
Poorly adjusted doors that do not properly plate.
→ May the cabin structure have moved or the ground is not flat and the structure must be adjusted
The ground must be as flat as possible, without slope, in order to avoid any deformations and thus bad parallelism of the doors.
Some time spacer must be used to rectifie the level.
The cabin level and ground must be checked with water level on each axis (O, X and Y)