I have a Delorme PN-40 that I am still learning how to use. Really like it so far. One feature that I wish it had is the ability to not just reset the trip odometer to zero (0), but to set it to a value that I enter. I sometimes still like to use paper roll charts, and if I get lost for a bit, by the time I find the trail again, my odometer reading does not match the value listed on the paper chart. If I am at the point on the trail where the paper chart says 35.0 miles, I would like to set the trip odometer to 35.0 miles so that the odometer reading and the paper chart match as I continue down the trail. Anybody know of a way to do this?