A few nights back I put together a Centuri X-24 Bug from the scans on JimZs:
http://www.spacemodeling.org/JimZ/centuri/ka-12.pdf
The printed 110 lb. cardstock was clear coated then beefed up a bit more with some brushed on Future clear acrylic.
Enlarge the picture and you'll see clear Scotch tape over the folded fin edges.
The conical nose cone is from Estes, the same plastic nose cone in the Yankee kit.
The engine mount tube is a Centuri style ST-7 to better fit the top hole of the shroud.
After many test "glides" I ended up with a quarter ounce of clay pressed into the back of the shroud.
First flight was at the May 14 N.E.F.A.R. launch in Bunnell, FL.
A Estes B6-2 was used. The launch lug isn't glued parallel to the engine, boost was off vertical towards the mid power pads.
At ejection it turned over and stabilized into a lifting body "glide". A little nose down but much better than any of my Quest HL-20 flights. I never got a glide out of the HL-20.
I had an original Centuri X-24 Bug in 1973. I never got a glide out of that one either.
It needs a little more clay to bring up the nose for a more horizontal descent.
A good surprise and success!
I've got to check back on the nefar.net website to see if Jimmy got video.