I was unhappy with the jetways in FSX aligning (or rather mis-aligning) with the beautiful new 777, so I made a small tweak. On the Z coordinate in the Exits section of the aircraft.cfg file, change the 12.X whatever PMDG entered to an 8 and you'll be much more pleased with the vertical alignment. The jetways will no longer jump into and hang in mid air to meet the deck - they align pretty much right on (as far as appearances go).
Now, the only remaining issue, and I'd appreciate some help from someone more enlightened is the default jetways are a bit short to hit the 2L door. The FSDT KDFW jetways are fine and still checking a few - but default jetways in FSX simply don't have the reach to hit 2L. Any thoughts?? It's not a problem when I'm coming in, as I can simply pull in further to avoid the issue, but starting from cold/dark, most airports see the issue.