Shockwave, I wonder why the JG is so bad, and so different from the Starduster just because they use a different type of feed? It's still a center-fed dipole, just without being insulated from ground. 
Is it the Gamma match which gives it a bad angle due to the 90° capacitive phase at the feed point?
Anyway, you've both missed the point of my post,
Marconi, I did mean 5/16, but for each HALF, the radiator and the radials (5/16 + 5/16 = 10/16 or 5/8) like the Sirio GM.
[ I'm also wondering if I'd have to elevate the radials & base bracket from ground to accomplish a Sirio GM type of performance, if even at all possible. ]
And Shockwave, the reason I have a Pistol is because his signal was a weak S-5 on the Pistol where the Imax with the same mast / coax / etc. is now an S-8, 30 miles from me & 3,000' elevation ASL. You're right about warning people regarding it's performance.
- But I'm going to dink with it by trying the 5/16 + 5/16 mod and see what happens - can't perform worse than it does in factory stock configuration
If it works well enough I'll be liberating it into the top of a 90' pine in the middle of town but left for jetsam in a year & a half when my buddy sells that house. 
