Jim, can you explain what happened to your friends glider? (to learn from)

In my Ventus cT the "firewall" is no firewall at all by design, it will never help stopping or containing a fire for more than a very very short moment. By design the fuel drain line comes into to engine box where a valve can be opened (manually) to drain the system via a hole through the box.

I really can imagine things catching fire when retracting a hot engine into that box, that's why I'm curious about the incident.