Hi Old Guy welcome to the forum. I have a NX10 and the Timer works the same as previous Transmitters, mine starts at 25%, I did have issues at the start with the volume, but spektrum bough out an update 3.03 on 27th December which resolved that kind of, I now notice they have a new Firmware update released on 17th Frbruary which I haven't loaded yet. I suggest that you load the latest update if that doesn't resolve your issue get in touch with Spektrum they will either help you resolve the issue, fix you Transmitter or replace it as it is under warranty.