First time posting here. I’m have a strange shifting issue and none of the ones that I have read about thus far are similar. Here goes:

2008 420 Rancher ES, less that 50 hours on it. When idle it will shift through the gears just fine. When moving slowly, like creeper slow it will also shift gears. However once you begin moving over 3-MPH or so it will no longer shift.

I changed the angle sensor, no luck. Shift motor seems fine because of it shifting when idle. I know the shift buttons on the handle bar work because of this as well.

What am I missing?

Thanks