Thank you for responding.
With the default flight as a starting point, or any other for that matter, the result I get is the same.
Started with the APU. Then, I thought shutting the APU down would make a difference, but it did not.
Getting it running, getting it flying are not issues.
But in flight at 170 knots, I get a fuel warning about every 2 to 3 minutes. Whether I hit CNTL + X or not, the fuel quantities in the aircraft remain unchanged and are at adequate levels.
And yes, I read the manual. (I've been a desktop pilot since the Commodore 64.)
I'll continue to search for the answer.
Something else is causing this.
Thank you,
Ray