I've had other issues w/ my V3 including trying to order a second set of sensors for another bike, the unit going into sleep mode with resetting the only way to activate it, and lastly the computer quitting mid ride. I contacted Cateye several times by email w/ no response.

Finally, I had my LBS return it as a warranty (even though I didn't buy it through them). Catyeye sent a brand new unit that works great.

I have noticed that you have to really tighten the screw mount on the rear sensors to fix them in a permanent location.

I have 1 last problem w/ my new unit. The display does not show all of the letters on the left side. I'm so disgusted w/ Cateye regarding this unit, I decided to just use it as is.