Thank you Steve,
Yes, I will give it a try. I have so much experience now with reinstalling XP ;-) that I can always come back.
In fact, after rethinking, I don't worry about the plugin anymore, as they go into each software as the name says.
The Saitek/Logitech drivers; that's, probably, another history.
The drivers for Panels, Yoke and Rudder work out of the box on both softwares.
The FIP panels is the most tricky one. I use them in XP with the platform of FSX Times Gauges, that does not use the Logitech drivers, but I will have to install those for msfs...
Anyway: Let's go for it and I keep you updated