You need to have the knack

• 

  e2mW6z7E9vFOC-YmMgQ2Pto4_8_6JZwcdD_wzOBnkwLdvFjRXDE_UY8HlxCfhZVnMa3pGHru=w128-h128-n-no-v1

When i arrived at the clients home and took a quick look at the door it was obvious that the problem was in the gear box as the locking mechanism of the door weren't being engaged by the handle. When i spoke to the client she informed me that "there used to be a knack" for getting it to lock. This could only mean one thing the gearbox had been slowly getting worse for sometime and today it gave up the ghost.