OK well I understand what you think. I am a retired software engineer and it seems to me that FSUIPC7 does unaccountably stop functioning on certain axes after a variable time, sometimes only 30 mins; ie the duration of a shortish flight. It can be throttles, flaps speed brake or a combination thereof. I accept that your statement can be correct but what I want is a solution to my problem which I may have incorrectly characterized as forgetting. Still and all I am a bit discouraged by setting these variable over and over and finding they mysteriously undo. That is not imagination; you can take that to the bank as a fact. In these sorts of cases I used to find that something assumed but not mentioned is the culprit. Possibly I am not doing something I should.
BTW I did dump the P3D installation and all who sailed in her when MSFS came out. Big mistake, so I have not been flying for 2 years till the PMDG 737 came out. I am still trying. I looked for but did not find documentation for FSUIPC7 and feel a bit uneasy in reverting to what I got with v3.5 which I still do have.