Well I guess that's both bad and good news... looks like I'll stick with the devil that I know for now.

This was all just about getting used to a new trainer and seeing what I could do with the tools at hand... with the 520, not much. What I really need to do is settle on one of the major apps to catch up on training for a mountain century in 4 months. I'm leaning toward TrainerRoad; do you have any advice?