Andy, thanks for your reply. In the course of trying to get the joystick/throttle to work, I went through all the options including this one. Sooo, I finally broke down and contacted Thrustmaster tech support, evan though I had to sign up for an account which required my giving their third-party agent my birthday and date. After submitting description, videos, and invoices, here is the bottom line straight from the horses mouth:
"Your T.Flight Hotas 4 has a hardware issue. The only option, as we do not repair these units, is to replace them if they are still under warranty.
"The warranty for your unit is 1 Year for US Customers if purchased brand new. Your invoice shows that you purchased this unit in 2020. It is not longer under warranty as you said.
"Our Thrustmaster team wishes you a pleasant day and remain at your disposal for any further information about our products."
Again, many thanks for taking an interest and for your reply. People like you make flight simming much better. m