I remember the fire section at Cosford being given an F5 a fair few years ago.
The look on their faces the first time they set light to it and discovered the fuselage was made of plywood and balsa, was a picture.
I did discover that the teleflex end fitting on the HP fuel cock was exactly the same as the missing airbrake fitting on the Slingsby Prefect I was re-building at the time. So although this was a sad end to a lovely aircraft, at least its demise gave new life to another aircraft. WE992 is still flying with Al Stacey at Keevil by the way (see the Air Cadet Gliding thread.
Dak