Hi Ed,
I am fairly sure they where these:
http://www3.towerhobbies.com/cgi-bin...?&I=LXMJJ9&P=0
and I was running 3/16 Titanium struts from central.
The plane was operated off grass as well as paved runways, really not to many problems - it would be good to make a really good padded cradle to support the plane when your starting the motor.
The plane was really cool with retracts and I would do it again in a flash.
good luck, dean