Hi everyone

I can not get my Spektrum DX3S to read the MPH on my Losi 8 2.0. The engine temprature and battery volt readings work fine. I marked the clutchbell and determined the roll. It is 1.1. I set the zoom to 50. The sticker is on the drive shaft but it still does not read the MPH. I have read the instructions over and over and sure I have it set up right. Do you have any ideas? Thank you.