I have built about (6) 1/2 A Spacers over the years. I was going to build a new one for the NATS, but ended up putting parts together from probably 3 of those 6 models. Flew pretty good at the NATS, but it did not level out on the last flight, and lost 1/2 of the altitude placing me in 3rd.
I am going to build one more.
Your pictures are not getting attached because they need to be under 100 K in size. About 2 3/4″ in size.