adrian
Flying Squad
To adjust the height of the track I would pack it with some 0.5mm plastic card for about 2 or 3 inches before the join, that should look nice and get the rails to the right height.
Also to add a little super-elevation maybe? On the 2mmFS group Laurie Adams posted this interesting video about super-elevation, slightly smaller scale so he was just using different thickness of copy paper to adjust the levels but looks very impressive.