No throttle output past mid-stick?

I've looked everywhere for an answer to this question, and can't find one.

I'm having a major issue with my throttle. I Just set this TX up yesterday, updated to the latest nightly build. My issue is that the channel output for the throttle doesn't go above 0%. There is throttle response down to -125%, but above mid-stick, I'm not getting any more throttle, which means I can't fly. I get a full -100/+100 when I look in the stick input menu under channel monitor. Limits are set to 250, scale 100. I'm setting this up for a plane, but I get the same symptoms if I change the mode to heli or multicopter.

Have you run sticks calibration ?

Many times.

Then next step is open transmitter and try to swap stick channel to test.

Solved:

It was specific to that model slot. I created a new slot, and bam, it works fine. I cross-checked everything between the two slots, and there were no differences. Weird. Thanks for the replies.