Ok, I know why it was not working. I forgot a step in the installation:Add the Auto section in the FSUIPC4.ini for the A/C or profile:I use a profile called NGX:

[Auto.NGX]0=Lua trimNGXTimer

for a particular model, for example the 738 in AA livery:

[Auto.Boeing 737-823NGX American Airlines Winglets]0=Lua trimNGXTimer

OK....Let's start over here.In the modules folder I have a trimNGX.lua and a trimNGXthread.lua from your original zip file.Then you posted the script, not a file, but a script that I copied and pasted in notepad and saved it as trimNGXtimer.luaDid I do that right?In the FSUIPC.ini file I already had a.....[Auto.NGX]with another lua assigned to 1=Lua bla bla blaSo do I still assign your lua as 0=Lua trimNGXtimer or use another number such as 2?This stuff still confuses me.

OK....Let's start over here.In the modules folder I have a trimNGX.lua and a trimNGXthread.lua from your original zip file.Then you posted the script, not a file, but a script that I copied and pasted in notepad and saved it as trimNGXtimer.luaDid I do that right?In the FSUIPC.ini file I already had a.....[Auto.NGX]with another lua assigned to 1=Lua bla bla blaSo do I still assign your lua as 0=Lua trimNGXtimer or use another number such as 2?This stuff still confuses me.

Then you posted the script, not a file, but a script that I copied and pasted in notepad and saved it as trimNGXtimer.luaDid I do that right?

That should do. I uploaded the lua file itself, but since it's not compressed your browser must be opening it so you see the text instead of the download box.You can copy-paste it, or choose "Save as" -> "trimTimer.lua"[Auto.NGX]0=Lua trimNGXtimer1=Lua bla bla blaThis is correct.