Let me try and summarize what you said...tell me if I'm wrong. Basically John Gross somehow is still not lying...though he clearly is. You're evidence is basically that he would just laugh at the matter...because it is so stupid. That's some evidence. Then you go to talk about, your qualifications and how this whole issue is basically laughed at...by real engineers. Again, this evidence is astounding, I might actually have to re-think this whole thing.
Next you go into what should or should not have been found in the debris. Take a look at these two videos...then talk about that. The first is the evil money grubbing Richard Gage, again showing Gross lying, and does it probably best of all. Also in regards to your question, what what molten steel turn into..take a look at the part of the Video with Bart Voorsanger...think that looks a little like it? But it couldn't be could it? The second is Jon doing an experiment, showing normal office supplies, and some jet aluminum couldn't produce the sulfur that was found. Don't like his results? Do just what he says prove him wrong by experiment...I mean for an engineer who laughs at other engineers, it should be no problem for you.
http://www.youtube.com/watch?v=fs_ogSbQFbM
http://www.youtube.com/watch?v=3YuDKUCALtU
Let me address your first point. My age and for that matter my background is not important. I am an adult..a person...whose opinions and thoughts should be treated with respect, the same as every one else. I would have no problem calling Gross a liar right to his face, in fact I would love to get the chance. But I would do in a respectful manner, I do everything with respect, like if he was giving a talk, and during the Q&A I would be like "Why did you feel the need to lie about eye witness reports of Molten steel at the University of Texas" and then watch him squirm, and avoid the topic. Also you're right I'm sure Gross wouldn't have the 10 seconds it would take to find these videos, but my hope is that he wouldn't need to do such a thing, you know because he (or someone from NIST) should probably be talking the the eye witnesses directly.
One last point, if you look at the Gage video I posted, it also has a quote attributed to Leslie Robertson, fully sourced. But he is same quack as well I'm sure.