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I'm new to this, and downloaded MY Trails thinking it should overlay other topos.  My Oregon 650t has Garmin topos100k and the MY Trails isn't overlaying when I turn them both on.  Every post I read suggests MYTrails is transparent, but I guess the question is does it work with topos100K? It appears not, I'm asking since maybe I'm doing something wrong.
Anybody? Thanks.