Bremspropeller

It's not really damaged, you're just kicking the servos offline. Hit the Servo Reset button and you'll be fine.

There's no direct way of gauging FF.
The clicks you're hearing is the totalizer winding down. I believe one click is a liter, but it could be multiples of that. So if you count the seconds between clicks, you get an idea. Other than that you could count the seconds it takes for the totalizer to change (10l increments) and then extrapolate to an hour.
Normally, fuel won't be much of a concern in the F1.

As others have stated, the A/B can be disengaged at any speed/ Mach. Just don't retard the throttle out of MIL.
The overspeed regulation exists in most jets. Difference here is that the overspeed will kick in automaticly, but there's no protetction against retarding the throttle in place, like on most other jets. In other jets, if you retard the go-stick, the engine will stay at high power and schedule back with lower Mach automaticly. In the F1, the engine will just go back and *poof* stall.
The overspeed is a mechanism to account for the shock-losses that become a thing at Mach 1.4 - why at 1.4? Well, I have forgotten too much supersonic flow theory to tell you all about it, but it's most probably related to some specific shock-table value. In essence, it's a matter of ram-rise (temperature goes up) and hence a loss in static pressure/ density, so you'll have to run the compressor at a higher speed to make the suck-squeeze-bang-blow magic happen.
Keep in mind that the ATAR 9K50 is basicly a glorified BMW 003 from WW2 - it's only got 9 compressor stages, so it's a very simple engine with a low compression-ratio compared to other contemporary engines. For comparison: The J79 has 17 compressor stages and a complex VSV/IGV system to have it run at higher compression ratios.

AIM-9B/J - rear aspect heaters => Seeker needs to be uncaged.
AIM-9JULI - Juliet with a Lima seeker (all aspect) => Seeker needs to be uncaged.
R550 Magic 1 - rear aspect heater => Seeker magically uncages itself. Eats flares like I eat éclairs.
R550 Magic 2 - all aspect heater (best heater for the F1) => Seeker magically uncages itself.
R530 IR - BFM* rear aspect (and limited 3-9 line capability) heater => Can only be carried on C/L station or inboard wing-stations. Use the C/L station.
R530EM - BFM* all aspect Fox 1 (acts like a pitbull on a playground in a furball) => Can only be carried on C/L station or inboard wing-stations. Use the C/L station.
S530F - one Fox 1 to own them all => If Jesus had a missile.
That's about it. Unless Aerges decides in the future to implement the V3B or C and Python 3/ V3S missile carried by Equador and South Africa.
____
* Big Fat Momma

Did you power up/ engage cooling of the missiles?
The EXT switch right outboard of the wingtip-missile station buttons should take care of that.

LE devices have been fixed with today's patch.
I love you guys! 😄

It's a known issue. There are several threads about it already.