I do a lot of long rides through areas that are poorly mapped. I make my own routes on third-party software (usually plot-a-route) and include my own directions as required. When I upload these routes to my Edge 830 it seems to recalculate them. It never improves them. It takes out my notes that include things like water stops, and instead adds a whole lot of instructions that tell me to continue straight on. It changes the route from where the trail is to where the device incorrectly thinks the trail is, and then when I ride down the trail it spends a lot of time telling me that I am going the wrong way. Is there a way I can stop this @!@!# device from messing with my routes?