Pmdg 747 cat3 landing error

I'm learning the pmdg 747 procedures. I setup a practice flight from manchester to Edinburgh. A couple of issues developed during this flight. Firstly, the toga thrust switch failed to kick in during takeoff. Secondly, after an almost glitch free ifr journey, my descent into edinburgh int finished off with a touchdown on the field just before the runway. I was able to bump along the field then roll over the motorway before "safely" reaching the runway. I am chuffed to have progressed this far so soon...but need to know how these two problems occurred.Cheers.Chucky35uk.