Highland Express bought a wreck of a 747, and failed to get it into service on schedule - Primera bought brand new equipment and leased in a wreck to cover for late delivery of their shiny new machines.
The number one engine was very suspect, push and start sequence was attempt to light 1,2,3,4 but 1 always whined and never spooled up, so they started 2,3,4 then cross bled started 1.