Report the effort needed to lock
If a B73 door requires a hard lift of the handle or pressure against the frame, explain when that started and where it catches. Include photographs of the wider opening where safe. The inspection should consider hinges, keeps and mechanism operation together, rather than assuming that a different cylinder will make a badly meeting door easier to use.
About this B73 enquiry area
For Sutton Coldfield, give the full postcode so we can confirm the location and availability. For a planned upgrade, list the exterior doors and any shared key requirements.