1. Did the dead student ever attend a mosque? What is the original (hearsay or not) source that he did?
2. Did he try to enter the stadium? What is the original (hearsay or not) source that he did?
3. Who, exactly, was his roomate? What is the source for that?
4. What was in the bomb? Was it "TATP" ? Was it "the same as the shoe bomber material."
5. Were "jihadi materials" found in his apartment? What is the first-hand source for that?
I have read a few of these threads, but have not made a solid chart of everything. My impression, however, was that all of the answers to the above questions were quite third-hand or further. I would be happy to be led to exact sources.
The most solid info was that the FBI had interrogated the roommate and friends, which you would certainly hope that they would, but the fact of interrogation does not mean that the results were startling. The fact that he tried to buy ammonium nitrate also seemed solid, but I haven't checked lately to see if the officer who overheard it has been identified and confirmed his info.
Information is always better than speculation, in either direction.
If you'd have followed these threads, as you claim, you'd know the answers to most of these. Even official sources have stated who his roommate was, and what kind of material was used in his bomb. Those weren't "third-hand" at all. Witnesses saw him trying to enter the stadium three times--he was turned away when they wanted to search his backpack. Perhaps witnesses aren't enough evidence for you.
The only questions that would seem to be open then would be the mosque question and the jihadi materials. Here, we have authorities telling an investigator that both are true, but these same authorities are unwilling to go on the record about it. Those will have to remain "open questions" until they do, although I have reason to believe them.
As to leading you to "exact sources"--please use your search function. Go to the threads (thoughtfully indexed under searchword "OUBombing") and use your browser's editor to "find" the words you seek--"cheema" might turn up the sources for the roommate's name, for instance. "TATP" might reveal the original sources for identifying the bomb material. (This one should be among some of the earliest threads, because they id'ed both the roommmate and the bomb substance right away.)
But please don't ask us to do your legwork for you. I, for one, refuse.
"The most solid info was that the FBI had interrogated the roommate and friends, which you would certainly hope that they would, but the fact of interrogation does not mean that the results were startling."
--- Depends upon the "interogation". Was it an Abu-panty's on the head type of questioning? Was it a bright light in the eyes questioning? Was it a bamboo shoots under the fingernails questioning.
The cynic in me says that it was a Monty Python, fluffy pillows type questioning.
FBI -- 'You really aren't involved in any terrorist activities or now anyone who is no do you?"
Subject -- 'No, of course not'
FBI -- 'Ok, you're free to go'
I agree that the sources for all of these 'facts' need to be verified.