Dazco,

I have the same problem with my Cateye Enduro 2. My computer will register speed under 2.5 mph, but at much below 2 mph it stops registering speed. A symbol flashes on the screen registering the fact that the computer knows the wheel is spinning, but it doesn't show a speed. My computer is set up completly according to directions (just got it) and I havce ridden with it on the road to test it and it matched the car. Most of my rides have the type of steep climb that you describe, but my group moves fast enough over them to keep speedometers registering. It's not jusst a problem with your computer. Could you try going back down the climb at a higher- than-climbing speed to register the distance you are climbing?

-moab