I don't think it takes a genius to surmise that what happened to Flight 800 was a major fuel leak, with engine exhaust as the ignition source. The "streaking light" seen by so many people from the ground was probably a series of ignitions prior to the main explosion, giving the impression that something was rising up to meet the aircraft.
Knowing very little about either aircraft or missiles, I lurked about for quite some time on one of the more popular aviation disaster newsgroups to try and get a feel for the technical issues involved in the discussion of Flight 800. One particular piece of information I garnered from experts who posted there is that there is no known missile whose engines would have continued to burn at the distance necessary to have fit the various missile scenarios described by the conspiracy theorists. Another is that the launch of such a missile would literally have lit up the horizon for many miles around; something not seen by any of the witnesses.
13,800 feet is just in the outside range of a shoulder-fired missile--but that's assuming that you're firing straight up at a stationary target. If the target is downrange even by a little bit, and moving, you've got to factor in the distance downrange as well as its rate of speed, into the equation.
The British Starstreak has a range of almost 23,000 feet. Congressional testimony has given 20,000 feet as the range of easily obtained MANPADs.
are you claiming that the fuel sensor for engine #4 is in the BODY of the 747 and not out near the #4 engine??
why didn't fuel sensors for engines one, two and three give similar readings?
is there any evidence that the WING or ENGINE #4 exploded?
i'm afraid your theory won't wash. i realize there is a very strong incentive to avoid cognitive dissonance, but when something stinks, it is rotten.