REFLECTOR: Fuel caps

[Tom]

These caps might work (without the external ring). The standard RV caps 
should directly fit. I've purchased O-rings from Vans for my fuel caps 
and they fit well.
http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1229544435-316-540&browse=misc&product=retro-cap

I also looked at Andair during Oshkosh and they make a lockable cap 
that's also engraved, I put one next to my cap and it looked identical 
in sizing.
http://www.andair.co.uk/system/index.html