Hi Pete,
Thanks for your reply. A few comments to your's:
1. This issue doesn't akways coincide with FSX starting up, when I agree there is a lot happening. But I can start up FSX and leave it running for an indefinite time, and as long as I don't touch the CH yoke throttle, when I first touch it (later) the movement needs to be halfway thorugh the axis before the FSX sees any movement (when it will jump to half-way through it's axis to catch up with the CH yoke throttle). After that one incident is over, the throttle works perfectly and has full responsiveness to the CH yoke throttle, until I re-start FSX and it starts all over again.
2. The above is independent of TrackIR, that is, I can not start TrackIR and it still occurs, and did prior to installing TrackIR. However, it only started to occur when I used FSUIPC as a throttle axis. Although- all other axes (including aeleron, elevator, rudder) to not appear to exhibit this behavior.
3. "The IN and OUT numbers are shown on the yoke? It has its own display? Or do you mean in the Axis assignments option in FSUIPC, or in Calibration?"
The numbers are on the FSUIPC Axis Assignment tab.
More specifically (writing as I test this):
a. I start FSX, C172 (stock) a/c. Throttles (CH and a/c) are fully out (off). The FSUIPC Axis Assignment tab shows -16384 for the throttle (I had to "Ignore Axis" several times to see the throttle, and move the throttle very slightly to have the axis captured on the FSUIPC display).
b. I have to push the CH throttle in until the FSUIPC Axis Assignment tab In/Out windows show 0, before the FSX throttle jumps to about half-way in (full in is +16984).
I'm sure that this is something in my system and not FSUIPC, otherwise you would have seen this before.
Also, the Delta assignment is 256 (I think that was a default value ??).
Another, possibly related, effect, is the Pan switch in the CH yoke. It is the only axis or switch that I am still using the FSX assignments (to control the pan view), as when trying it with FSUIPC I get very animated motion (pans have large steps rather than smooth continuous motion), although this continues to occur throughout a FSX session. I only mention it in case it provides you with some useful info.
Thanks again. I am about to try some conditional button assignments in FSUIPC.ini, that should be fun :)
Bruce.