Sorry Sir, Should have stated in my initial message. Version 18.3 works perfectly.
I have FSUPIC install (latest unregistered version)
I have FCS in the panel file (I removed an older version from the Gauge file)
I have several versions of C++ installed, both X64 and X86: 2005, 2008 (3 versions), 2010, 2012, 2013 (3 versions), and 2015. Should I have this many?
I will have to check to see if my mouse is connected to yoke activity.
Something interesting I have noted. The wild oscillations occur in full burner at takeoff and gear up. The control stick in the cockpit is moving back and forth about 3 inches. When I come out of burner, the flutter subsides to very minimal, still noticable, but very subtle. At this point, I can go in and out of burner as much as I want and the oscillations still remain, but very slightly. The control stick moves back and forth about an inch.
Again, version 18.3 has no problems. Nor do any other of my many aircraft in the sim. I have disconnected the mouse/yoke function.
At one point when I started the sim, I got the red FCS FAIL indication in the HUD. I did not have the oscillations when that occurred. When I restarted the sim, there was no red FCS Fail and the oscillations returned.
I completely uninstalled Version 18.4 and reinstalled it along with C++ 2015. The problem still exists. I will reinstall version 18.3 and let you know how it goes.
Thank you,
Reggie