Make UA120X a UA1204 (best guess figures)
Remove extraneous TLs from J-2
Fix solid fuel and thrust on fairings, add 260/300"

260 for Voyager on S-IVB, 300 for USAF SLS B payloads.
The solids change is because as it was written, no matter heavy a PLF
was, it still had only 1 thrust and 0.1 fuel. Rewritten for thrust =
10*mass and fuel = mass.